Publications of Anton P. Tonchev    :chronological  alphabetical  combined listing:

%% Books   
@book{fds184712,
   Author = {C.D. Bowman and E. G. Bilpuch and D.C. Bowman and A.S. Crowell and C.R.
             Howell, K. McCabe and G. A. Smith and A.P. Tonchev and W. Tornow and V.
             Violet, R.B. Vogelaar and R.L. Walter and J. Yingling.},
   Title = {The Alternative Reactor Technology Comprising Graphite,
             Molten Salt, and Accelerators.},
   Booktitle = {Handbook of Nuclear Engineering},
   Publisher = {Springer Science+Business Media LLC 2010},
   Editor = {Dan Gabriel Cacuci},
   Year = {2010},
   ISBN = {DOI 10.1007/978-0-387-98149-9_24},
   Key = {fds184712}
}


%% Papers Published   
@article{fds328275,
   Author = {Tonchev, AP and Tsoneva, N and Bhatia, C and Arnold, CW and Goriely, S and Hammond, SL and Kelley, JH and Kwan, E and Lenske, H and Piekarewicz, J and Raut, R and Rusev, G and Shizuma, T and Tornow, W},
   Title = {Pygmy and core polarization dipole modes in 206 Pb:
             Connecting nuclear structure to stellar nucleosynthesis},
   Journal = {Physics Letters B},
   Volume = {773},
   Pages = {20-25},
   Year = {2017},
   Month = {October},
   url = {http://dx.doi.org/10.1016/j.physletb.2017.07.062},
   Abstract = {© 2017 A high-resolution study of the electromagnetic
             response of 206 Pb below the neutron separation energy is
             performed using a γ→,γ ′ ) experiment at the HIγ→S
             facility. Nuclear resonance fluorescence with 100% linearly
             polarized photon beams is used to measure spins, parities,
             branching ratios, and decay widths of excited states in 206
             Pb from 4.9 to 8.1 MeV. The extracted ΣB(E1)↑ and
             ΣB(M1)↑ values for the total electric and magnetic dipole
             strength below the neutron separation energy are 0.9±0.2 e
             2 fm 2 and 8.3±2.0μ N 2 , respectively. These measurements
             are found to be in very good agreement with the predictions
             from an energy-density functional (EDF) plus quasiparticle
             phonon model (QPM). Such a detailed theoretical analysis
             allows to separate the pygmy dipole resonance from both the
             tail of the giant dipole resonance and multi-phonon
             excitations. Combined with earlier photonuclear experiments
             above the neutron separation energy, one extracts a value
             for the electric dipole polarizability of 206 Pb of α D
             =122±10 mb/MeV. When compared to predictions from both the
             EDF+QPM and accurately calibrated relativistic EDFs, one
             deduces a range for the neutron-skin thickness of R skin 206
             =0.12–0.19 fm and a corresponding range for the slope of
             the symmetry energy of L=48–60 MeV. This newly obtained
             information is also used to estimate the Maxwellian-averaged
             radiative cross section Pb205(n,γ)Pb206 at 30 keV to be
             σ=130±25 mb. The astrophysical impact of this
             measurement—on both the s-process in stellar
             nucleosynthesis and on the equation of state of neutron-rich
             matter—is discussed.},
   Doi = {10.1016/j.physletb.2017.07.062},
   Key = {fds328275}
}

@article{fds329974,
   Author = {Krishichayan, and Bhike, M and Tornow, W and Tonchev, AP and Kawano,
             T},
   Title = {Accurate ( ) reaction cross-section measurements from 6.5 to
             14.8 MeV},
   Journal = {Physical Review C},
   Volume = {96},
   Number = {4},
   Year = {2017},
   Month = {October},
   url = {http://dx.doi.org/10.1103/PhysRevC.96.044623},
   Doi = {10.1103/PhysRevC.96.044623},
   Key = {fds329974}
}

@article{fds324424,
   Author = {Krishichayan, and Bhike, M and Finch, SW and Howell, CR and Tonchev,
             AP and Tornow, W},
   Title = {Photofission cross-section ratio measurement of 235 U/ 238 U
             using monoenergetic photons in the energy range of
             9.0–16.6 MeV},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {854},
   Pages = {40-44},
   Year = {2017},
   Month = {May},
   url = {http://dx.doi.org/10.1016/j.nima.2017.02.043},
   Abstract = {© 2017 Elsevier B.V.Photofission cross-section ratios of
             235U and 238U have been measured using monoenergetic photon
             beams at the HIγS facility of TUNL. These measurements have
             been performed in small energy steps between 9.0 and 16.6
             MeV using a dual-fission ionization chamber. Measured
             cross-section ratios are compared with the previous
             experimental data as well as with the recent evaluated
             nuclear data library ENDF.},
   Doi = {10.1016/j.nima.2017.02.043},
   Key = {fds324424}
}

@article{fds325703,
   Author = {Bhike, M and Tornow, W and Krishichayan, and Tonchev,
             AP},
   Title = {Exploratory study of fission product yield determination
             from photofission of at 11 MeV with monoenergetic
             photons},
   Journal = {Physical Review C},
   Volume = {95},
   Number = {2},
   Year = {2017},
   Month = {February},
   url = {http://dx.doi.org/10.1103/PhysRevC.95.024608},
   Doi = {10.1103/PhysRevC.95.024608},
   Key = {fds325703}
}

@article{fds329292,
   Author = {Tonchev, AP and Escher, JE and Scielzo, N and Bedrossian, P and Ilieva,
             RS and Humby, P and Cooper, N and Goddard, PM and Werner, V and Tornow, W and Rusev, G and Kelley, JH and Pietralla, N and Scheck, M and Savran, D and Löher, B and Yates, SW and Crider, BP and Peters, EE and Tsoneva, N and Goriely, S},
   Title = {Capture cross sections on unstable nuclei},
   Journal = {EPJ Web of Conferences},
   Volume = {146},
   Pages = {01013-01013},
   Editor = {Plompen, A and Hambsch, F-J and Schillebeeckx, P and Mondelaers, W and Heyse, J and Kopecky, S and Siegler, P and Oberstedt,
             S},
   Year = {2017},
   url = {http://dx.doi.org/10.1051/epjconf/201714601013},
   Doi = {10.1051/epjconf/201714601013},
   Key = {fds329292}
}

@article{fds329293,
   Author = {Schwengner, R and Massarczyk, R and Bemmerer, D and Beyer, R and Junghans, AR and Kögler, T and Rusev, G and Tonchev, AP and Tornow, W and Wagner, A},
   Title = {E1 and M1 strength functions at low energy},
   Journal = {EPJ Web of Conferences},
   Volume = {146},
   Pages = {05001-05001},
   Editor = {Plompen, A and Hambsch, F-J and Schillebeeckx, P and Mondelaers, W and Heyse, J and Kopecky, S and Siegler, P and Oberstedt,
             S},
   Year = {2017},
   url = {http://dx.doi.org/10.1051/epjconf/201714605001},
   Doi = {10.1051/epjconf/201714605001},
   Key = {fds329293}
}

@article{fds329294,
   Author = {Gooden, M and Arnold, C and Bhike, M and Bredeweg, T and Fowler, M and Tonchev, A and Tornow, W and Stoyer, M and Vieira, D and Wilhelmy,
             J},
   Title = {Energy dependence of fission product yields from 235 U, 238
             U, and 239 Pu with monoenergetic neutrons between thermal
             and 14.8 MeV},
   Journal = {EPJ Web of Conferences},
   Volume = {146},
   Pages = {04024-04024},
   Editor = {Plompen, A and Hambsch, F-J and Schillebeeckx, P and Mondelaers, W and Heyse, J and Kopecky, S and Siegler, P and Oberstedt,
             S},
   Year = {2017},
   url = {http://dx.doi.org/10.1051/epjconf/201714604024},
   Doi = {10.1051/epjconf/201714604024},
   Key = {fds329294}
}

@article{fds329295,
   Author = {Krishichayan, and Bhike, M and Tonchev, AP and Tornow,
             W},
   Title = {Fission product yield measurements using monoenergetic
             photon beams},
   Journal = {EPJ Web of Conferences},
   Volume = {146},
   Pages = {04018-04018},
   Editor = {Plompen, A and Hambsch, F-J and Schillebeeckx, P and Mondelaers, W and Heyse, J and Kopecky, S and Siegler, P and Oberstedt,
             S},
   Year = {2017},
   url = {http://dx.doi.org/10.1051/epjconf/201714604018},
   Doi = {10.1051/epjconf/201714604018},
   Key = {fds329295}
}

@article{fds318471,
   Author = {Benouaret, N and Beller, J and Pai, H and Pietralla, N and Ponomarev,
             VY and Romig, C and Schnorrenberger, L and Zweidinger, M and Scheck, M and Isaak, J and Savran, D and Sonnabend, K and Raut, R and Rusev, G and Tonchev, AP and Tornow, W and Weller, HR and Kelley,
             JH},
   Title = {Dipole response of the odd-proton nucleus 205 Tl up to the
             neutron-separation energy},
   Journal = {Journal of Physics G: Nuclear and Particle
             Physics},
   Volume = {43},
   Number = {11},
   Pages = {115101-115101},
   Year = {2016},
   Month = {November},
   url = {http://dx.doi.org/10.1088/0954-3899/43/11/115101},
   Doi = {10.1088/0954-3899/43/11/115101},
   Key = {fds318471}
}

@article{fds318472,
   Author = {Hayes, AC and Cerjan, CJ and Jungman, G and Fowler, MM and Gooden, ME and Grim, GP and Henry, E and Rundberg, RS and Sepke, SM and Schneider, DHG and Singleton, RL and Tonchev, AP and Wilhelmy, JB and Yeamans,
             CB},
   Title = {Reaction-in-Flight neutrons as a test of stopping power in
             degenerate plasmas},
   Journal = {Journal of Physics},
   Volume = {717},
   Pages = {012022-012022},
   Year = {2016},
   Month = {May},
   url = {http://dx.doi.org/10.1088/1742-6596/717/1/012022},
   Doi = {10.1088/1742-6596/717/1/012022},
   Key = {fds318472}
}

@article{fds313733,
   Author = {Löher, B and Savran, D and Aumann, T and Beller, J and Bhike, M and Cooper, N and Derya, V and Duchêne, M and Endres, J and Hennig, A and Humby, P and Isaak, J and Kelley, JH and Knörzer, M and Pietralla, N and Ponomarev, VY and Romig, C and Scheck, M and Scheit, H and Silva, J and Tonchev, AP and Tornow, W and Wamers, F and Weller, H and Werner, V and Zilges, A},
   Title = {The decay pattern of the Pygmy Dipole Resonance of 140
             Ce},
   Journal = {Physics Letters B},
   Volume = {756},
   Pages = {72-76},
   Year = {2016},
   Month = {May},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2016.02.042},
   Doi = {10.1016/j.physletb.2016.02.042},
   Key = {fds313733}
}

@article{fds313748,
   Author = {Stave, S and Prinke, A and Greenwood, L and Haas, D and Burke, JT and Ressler, JJ and Tonchev, AP and Younes, W},
   Title = {Reducing uncertainties for short lived cumulative fission
             product yields},
   Journal = {Journal of Radioanalytical and Nuclear Chemistry},
   Volume = {307},
   Number = {3},
   Pages = {2221-2225},
   Year = {2016},
   Month = {March},
   ISSN = {0236-5731},
   url = {http://dx.doi.org/10.1007/s10967-015-4436-3},
   Doi = {10.1007/s10967-015-4436-3},
   Key = {fds313748}
}

@article{fds314803,
   Author = {Isaak, J and Beller, J and Fiori, E and Glorius, J and Krtička, M and Löher, B and Pietralla, N and Romig, C and Rusev, G and Savran, D and Scheck, M and Silva, J and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zweidinger, M},
   Title = {Investigation of the Photon Strength Function in 130
             Te},
   Journal = {Journal of Physics},
   Volume = {665},
   Pages = {012039-012039},
   Year = {2016},
   Month = {January},
   ISSN = {1742-6588},
   url = {http://dx.doi.org/10.1088/1742-6596/665/1/012039},
   Doi = {10.1088/1742-6596/665/1/012039},
   Key = {fds314803}
}

@article{fds313731,
   Author = {Gooden, ME and Arnold, CW and Becker, JA and Bhatia, C and Bhike, M and Bond, EM and Bredeweg, TA and Fallin, B and Fowler, MM and Howell, CR and Kelley, JH and Krishichayan, and Macri, R and Rusev, G and Ryan, C and Sheets, SA and Stoyer, MA and Tonchev, AP and Tornow, W and Vieira, DJ and Wilhelmy, JB},
   Title = {Energy Dependence of Fission Product Yields from 235U, 238U
             and 239Pu for Incident Neutron Energies Between 0.5 and 14.8
             MeV},
   Journal = {Nuclear Data Sheets},
   Volume = {131},
   Pages = {319-356},
   Year = {2016},
   Month = {January},
   ISSN = {0090-3752},
   url = {http://dx.doi.org/10.1016/j.nds.2015.12.006},
   Doi = {10.1016/j.nds.2015.12.006},
   Key = {fds313731}
}

@article{fds313732,
   Author = {Champine, B and Gooden, ME and Krishichayan, and Norman, EB and Scielzo, ND and Stoyer, MA and Thomas, KJ and Tonchev, AP and Tornow, W and Wang, BS},
   Title = {Measurement of the cross section and the associated
             branching ratios in the decay of},
   Journal = {Physical Review C},
   Volume = {93},
   Number = {1},
   Year = {2016},
   Month = {January},
   ISSN = {2469-9985},
   url = {http://dx.doi.org/10.1103/PhysRevC.93.014611},
   Doi = {10.1103/PhysRevC.93.014611},
   Key = {fds313732}
}

@article{fds318473,
   Author = {Escher, JE and Tonchev, AP and Burke, JT and Bedrossian, P and Casperson, RJ and Cooper, N and Hughes, RO and Humby, P and Ilieva, RS and Ota, S and Pietralla, N and Scielzo, ND and Werner,
             V},
   Title = {Compound-nuclear reactions with unstable nuclei:
             Constraining theory through innovative experimental
             approaches},
   Journal = {EPJ Web of Conferences},
   Volume = {122},
   Pages = {12001-12001},
   Editor = {Kawano, T and Chiba, S and Paris, MW and Talou, P},
   Year = {2016},
   url = {http://dx.doi.org/10.1051/epjconf/201612212001},
   Doi = {10.1051/epjconf/201612212001},
   Key = {fds318473}
}

@article{fds329812,
   Author = {Hayes, AC and Jungman, G and Schulz, AE and Boswell, M and Fowler, MM and Grim, G and Klein, A and Rundberg, RS and Wilhelmy, JB and Wilson, D and Cerjan, C and Schneider, D and Sepke, SM and Tonchev, A and Yeamans,
             C},
   Title = {Reaction-in-flight neutrons as a test of stopping power in
             degenerate plasmas},
   Journal = {Physics of Plasmas},
   Volume = {22},
   Number = {8},
   Pages = {082703-082703},
   Year = {2015},
   Month = {August},
   url = {http://dx.doi.org/10.1063/1.4928104},
   Doi = {10.1063/1.4928104},
   Key = {fds329812}
}

@article{fds313730,
   Author = {Bhatia, C and Fallin, BF and Gooden, ME and Howell, CR and Kelley, JH and Tornow, W and Arnold, CW and Bond, E and Bredeweg, TA and Fowler, MM and Moody, W and Rundberg, RS and Rusev, GY and Vieira, DJ and Wilhelmy, JB and Becker, JA and Macri, R and Ryan, C and Sheets, SA and Stoyer, MA and Tonchev, AP},
   Title = {Exploratory study of fission product yields of
             neutron-induced fission of , and at 8.9 MeV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {91},
   Number = {6},
   Year = {2015},
   Month = {June},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.91.064604},
   Doi = {10.1103/PhysRevC.91.064604},
   Key = {fds313730}
}

@article{fds313742,
   Author = {DiGiovine, B and Henderson, D and Holt, RJ and Raut, R and Rehm, KE and Robinson, A and Sonnenschein, A and Rusev, G and Tonchev, AP and Ugalde,
             C},
   Title = {Bubble chambers for experiments in nuclear
             astrophysics},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {781},
   Pages = {96-104},
   Year = {2015},
   Month = {May},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2015.01.060},
   Doi = {10.1016/j.nima.2015.01.060},
   Key = {fds313742}
}

@article{fds313729,
   Author = {Krishichayan, and Bhike, M and Tornow, W and Rusev, G and Tonchev, AP and Tsoneva, N and Lenske, H},
   Title = {Polarized photon scattering off : Determining the parity of
             states},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {91},
   Number = {4},
   Year = {2015},
   Month = {April},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.91.044328},
   Doi = {10.1103/PhysRevC.91.044328},
   Key = {fds313729}
}

@article{fds313728,
   Author = {Beller, J and Stumpf, C and Scheck, M and Pietralla, N and Deleanu, D and Filipescu, DM and Glodariu, T and Haxton, W and Idini, A and Kelley, JH and Kwan, E and Martinez-Pinedo, G and Raut, R and Romig, C and Roth, R and Rusev, G and Savran, D and Tonchev, AP and Tornow, W and Wagner, J and Weller, HR and Zamfir, NV and Zweidinger, M},
   Title = {Separation of the 1+/1- parity doublet
             in 20Ne},
   Journal = {Physics Letters B},
   Volume = {741},
   Pages = {128-133},
   Year = {2015},
   Month = {February},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2014.12.018},
   Abstract = {© 2014 The Authors. The (J, T)=(1, 1) parity doublet in 20
             Ne at 11.26 MeV is a good candidate to study parity
             violation in nuclei. However, its energy splitting is known
             with insufficient accuracy for quantitative estimates of
             parity violating effects. To improve on this unsatisfactory
             situation, nuclear resonance fluorescence experiments using
             linearly and circularly polarized γ-ray beams were used to
             determine the energy difference of the parity doublet
             δE=E(1 - )-E(1 + )=-3.2(±0.7)stat( -1.2 +0.6 )sys keV and
             the ratio of their integrated cross sections I s,0 (+)
             /Is,0(-)=29(±3) stat ( -7 +14 ) sys . Shell-model
             calculations predict a parity-violating matrix element
             having a value in the range 0.46-0.83 eV for the parity
             doublet. The small energy difference of the parity doublet
             makes 20 Ne an excellent candidate to study parity violation
             in nuclear excitations.},
   Doi = {10.1016/j.physletb.2014.12.018},
   Key = {fds313728}
}

@article{fds313734,
   Author = {Benouaret, N and Beller, J and Isaak, J and Kelley, JH and Pai, H and Pietralla, N and Ponomarev, VY and Raut, R and Romig, C and Rusev, G and Savran, D and Scheck, M and Schnorrenberger, L and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zweidinger,
             M},
   Title = {QPM Analysis of 205 Tl Nuclear Excitations below the Giant
             Dipole Resonance},
   Journal = {EPJ Web of Conferences},
   Volume = {93},
   Pages = {01044-01044},
   Editor = {Schwengner, R and Zuber, K},
   Year = {2015},
   url = {http://dx.doi.org/10.1051/epjconf/20159301044},
   Doi = {10.1051/epjconf/20159301044},
   Key = {fds313734}
}

@article{fds313735,
   Author = {Werner, V and Cooper, N and Goddard, PM and Humby, P and Ilieva, RS and Rusev, G and Beller, J and Bernards, C and Crider, BP and Isaak, J and Kelley, JH and Kwan, E and Löher, B and Peters, EE and Pietralla, N and Romig, C and Savran, D and Scheck, M and Tonchev, AP and Tornow, W and Yates, SW and Zweidinger, M},
   Title = {Dipole strength distributions from HIGS Experiments},
   Journal = {EPJ Web of Conferences},
   Volume = {93},
   Pages = {01031-01031},
   Editor = {Schwengner, R and Zuber, K},
   Year = {2015},
   url = {http://dx.doi.org/10.1051/epjconf/20159301031},
   Doi = {10.1051/epjconf/20159301031},
   Key = {fds313735}
}

@article{fds313736,
   Author = {Isaak, J and Löher, B and Savran, D and Aumann, T and Beller, J and Cooper, N and Derya, V and Duchêne, M and Endres, J and Fiori, E and Kelley, JH and Knörzer, M and Pietralla, N and Ponomarev, VY and Romig,
             C and Scheck, M and Scheit, H and Silva, J and Tonchev, AP and Tornow, W and Weller, HR and Werner, V and Zilges, A and Zweidinger,
             M},
   Title = {Decay pattern of the Pygmy Dipole Resonance in 140
             Ce},
   Journal = {EPJ Web of Conferences},
   Volume = {93},
   Pages = {01048-01048},
   Editor = {Schwengner, R and Zuber, K},
   Year = {2015},
   url = {http://dx.doi.org/10.1051/epjconf/20159301048},
   Doi = {10.1051/epjconf/20159301048},
   Key = {fds313736}
}

@article{fds313737,
   Author = {Tonchev, A and Bhatia, C and Kelley, J and Raut, R and Rusev, G and Tornow,
             W and Tsoneva, N},
   Title = {Nuclear Structure Studies with Gamma-Ray
             Beams},
   Journal = {EPJ Web of Conferences},
   Volume = {93},
   Pages = {01030-01030},
   Editor = {Schwengner, R and Zuber, K},
   Year = {2015},
   url = {http://dx.doi.org/10.1051/epjconf/20159301030},
   Doi = {10.1051/epjconf/20159301030},
   Key = {fds313737}
}

@article{fds313727,
   Author = {Massarczyk, R and Rusev, G and Schwengner, R and Dönau, F and Bhatia,
             C and Gooden, ME and Kelley, JH and Tonchev, AP and Tornow,
             W},
   Title = {Magnetic dipole strength in and in the spin-flip resonance
             region},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {90},
   Number = {5},
   Year = {2014},
   Month = {November},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.90.054310},
   Doi = {10.1103/PhysRevC.90.054310},
   Key = {fds313727}
}

@article{fds313726,
   Author = {Bhatia, C and Fallin, B and Gooden, ME and Howell, CR and Kelley, JH and Tornow, W and Arnold, CW and Bond, EM and Bredeweg, TA and Fowler, MM and Moody, WA and Rundberg, RS and Rusev, G and Vieira, DJ and Wilhelmy, JB and Becker, JA and Macri, R and Ryan, C and Sheets, SA and Stoyer, MA and Tonchev, AP},
   Title = {Dual-fission chamber and neutron beam characterization for
             fission product yield measurements using monoenergetic
             neutrons},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {757},
   Pages = {7-19},
   Year = {2014},
   Month = {September},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2014.03.022},
   Doi = {10.1016/j.nima.2014.03.022},
   Key = {fds313726}
}

@article{fds313725,
   Author = {deBoer, RJ and Best, A and Görres, J and Smith, K and Tan, W and Wiescher,
             M and Raut, R and Rusev, G and Tonchev, AP and Tornow,
             W},
   Title = {Photoneutron strengths in at energies of astrophysical
             interest},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {89},
   Number = {5},
   Year = {2014},
   Month = {May},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.89.055802},
   Doi = {10.1103/PhysRevC.89.055802},
   Key = {fds313725}
}

@article{fds316572,
   Author = {Gunsing, F and Fraval, K and Mathelie, M and Valenta, S and Bečvář,
             F and Rusev, G and Tonchev, AP and Mitchell, G and Baramsai, B and Altstadt, S and Andrzejewski, J and Audouin, L and Barbagallo, M and Bécares, V and Belloni, F and Berthoumieux, E and Billowes, J and Boccone, V and Bosnar, D and Brugger, M and Calviani, M and Calviño, F and Cano-Ott, D and Carrapiço, C and Cerutti, F and Chiaveri, E and Chin,
             M and Colonna, N and Cortés, G and Cortés-Giraldo, MA and Diakaki, M and Domingo-Pardo, C and Duran, I and Dressler, R and Eleftheriadis, C and Ferrari, A and Ganesan, S and García, AR et al.},
   Title = {Spin Measurements of n +87Sr for Level Density
             Studies},
   Journal = {Nuclear Data Sheets},
   Volume = {119},
   Pages = {132-136},
   Year = {2014},
   Month = {May},
   ISSN = {0090-3752},
   url = {http://dx.doi.org/10.1016/j.nds.2014.08.037},
   Abstract = {We have used the 4π BaF2 gamma-ray detector array at the
             n_TOF neutron time-of-flight facility at CERN for an
             experiment in order to determine the spins of resonances of
             n+87Sr by measuring the gamma-ray spectra and multiplicity
             distributions. The first results are presented here. We have
             assigned the orbital momentum l to all evaluated resonances
             on the basis of their neutron widths. Further we have
             assigned the spin J to 16 s-wave resonances on based the
             population of low-lying levels.},
   Doi = {10.1016/j.nds.2014.08.037},
   Key = {fds316572}
}

@article{fds313723,
   Author = {Sauerwein, A and Sonnabend, K and Fritzsche, M and Glorius, J and Kwan,
             E and Pietralla, N and Romig, C and Rusev, G and Savran, D and Schnorrenberger, L and Tonchev, AP and Tornow, W and Weller,
             HR},
   Title = {Determination of the cross section using quasi-monoenergetic
             Compton backscattered rays},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {89},
   Number = {3},
   Year = {2014},
   Month = {March},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.89.035803},
   Doi = {10.1103/PhysRevC.89.035803},
   Key = {fds313723}
}

@article{fds313740,
   Author = {Derya, V and Savran, D and Endres, J and Harakeh, MN and Hergert, H and Kelley, JH and Papakonstantinou, P and Pietralla, N and Ponomarev,
             VY and Roth, R and Rusev, G and Tonchev, AP and Tornow, W and Wörtche, HJ and Zilges, A},
   Title = {Isospin properties of electric dipole excitations in
             48Ca},
   Journal = {Physics Letters B},
   Volume = {730},
   Pages = {288-292},
   Year = {2014},
   Month = {March},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2014.01.050},
   Doi = {10.1016/j.physletb.2014.01.050},
   Key = {fds313740}
}

@article{fds313720,
   Author = {Massarczyk, R and Schwengner, R and Dönau, F and Frauendorf, S and Anders, M and Bemmerer, D and Beyer, R and Bhatia, C and Birgersson, E and Butterling, M and Elekes, Z and Ferrari, A and Gooden, ME and Hannaske,
             R and Junghans, AR and Kempe, M and Kelley, JH and Kögler, T and Matic, A and Menzel, ML and Müller, S and Reinhardt, TP and Röder, M and Rusev, G and Schilling, KD and Schmidt, K and Schramm, G and Tonchev, AP and Tornow,
             W and Wagner, A},
   Title = {Nuclear deformation and neutron excess as competing effects
             for dipole strength in the pygmy region.},
   Journal = {Physical Review Letters},
   Volume = {112},
   Number = {7},
   Pages = {072501},
   Year = {2014},
   Month = {February},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/physrevlett.112.072501},
   Abstract = {The electromagnetic dipole strength below the
             neutron-separation energy has been studied for the xenon
             isotopes with mass numbers A=124, 128, 132, and 134 in
             nuclear resonance fluorescence experiments using the γELBE
             bremsstrahlung facility at Helmholtz-Zentrum
             Dresden-Rossendorf and the HIγS facility at Triangle
             Universities Nuclear Laboratory Durham. The systematic study
             gained new information about the influence of the neutron
             excess as well as of nuclear deformation on the strength in
             the region of the pygmy dipole resonance. The results are
             compared with those obtained for the chain of molybdenum
             isotopes and with predictions of a random-phase
             approximation in a deformed basis. It turned out that the
             effect of nuclear deformation plays a minor role compared
             with the one caused by neutron excess. A global
             parametrization of the strength in terms of neutron and
             proton numbers allowed us to derive a formula capable of
             predicting the summed E1 strengths in the pygmy region for a
             wide mass range of nuclides.},
   Doi = {10.1103/physrevlett.112.072501},
   Key = {fds313720}
}

@article{fds329813,
   Author = {Grim, GP and Rundberg, R and Hayes, AC and Jungman, G and Boswell, M and Klein, A and Wilhelmy, J and Tonchev, A and Yeamans,
             CB},
   Title = {Measurement of reaction-in-ight neutrons using thulium
             activation at the National Ignition Facility},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {9211},
   Year = {2014},
   Month = {January},
   ISBN = {9781628412383},
   url = {http://dx.doi.org/10.1117/12.2066249},
   Abstract = {© 2014 SPIE. We report on the first observation of tertiary
             reaction-in-ight (RIF) neutrons produced in compressed
             deuterium and tritium filled capsules using the National
             Ignition Facility at Lawrence Livermore National Laboratory,
             Livermore, CA. RIF neutrons are produced by third-order, out
             of equilibrium ("in-ight") fusion reactions, initiated by
             primary fusion products. The rate of RIF reactions is
             dependent upon the range of the elastically scattered fuel
             ions and therefore a diagnostic of Coulomb physics within
             the plasma. At plasma temperatures of∼5 keV, the presence
             of neutrons with kinetic energies greater than 15 MeV is a
             unique signature for RIF neutron production. The reaction
             169 Tm(n,3n) 167 Tm has a threshold of 15.0 MeV, and a
             unique decay scheme making it a suitable diagnostic for
             observing RIF neutrons. RIF neutron production is quantified
             by the ratio of 167Tm/168Tm observed in a 169 Tm foil, where
             the reaction 169 Tm(n,2n) 168 Tm samples the primary neutron
             uence. Averaged over 4 implosions 1-4 at the NIF, the 167
             Tm/ 168 Tm ratio is measured to be 1.5± 0.3× 10 -5 ,
             leading to an average ratio of RIF to primary neutron ratio
             of 1.0± 0.2× 10 -4 . These ratios are consistent with the
             predictions for charged particle stopping in a quantum
             degenerate plasma.},
   Doi = {10.1117/12.2066249},
   Key = {fds329813}
}

@article{fds313721,
   Author = {Isaak, J and Beller, J and Fiori, E and Krtička, M and Löher, B and Pietralla, N and Romig, C and Rusev, G and Savran, D and Scheck, M and Silva, J and Sonnabend, K and Tonchev, A and Tornow, W and Weller, H and Zweidinger, M},
   Title = {Decay pattern of the Pygmy Dipole Resonance in 130
             Te},
   Journal = {EPJ Web of Conferences},
   Volume = {66},
   Pages = {02055-02055},
   Editor = {Lunardi, S and Bizzeti, PG and Bucci, C and Chiari, M and Dainese, A and Di
             Nezza, P and Menegazzo, R and Nannini, A and Signorini, C and Valiente-Dobon, JJ},
   Year = {2014},
   url = {http://dx.doi.org/10.1051/epjconf/20146602055},
   Doi = {10.1051/epjconf/20146602055},
   Key = {fds313721}
}

@article{fds313724,
   Author = {Benouaret, N and Beller, J and Isaak, J and Kelley, JH and Pai, H and Pietralla, N and Ponomarev, VY and Raut, R and Romig, C and Rusev, G and Savran, D and Scheck, M and Schnorrenberger, L and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zweidinger,
             M},
   Title = {Photoexcitation of the Stable Tl Isotopes Below the Neutron
             Separation Energy},
   Journal = {Acta Physica Polonica, Series B.},
   Volume = {45},
   Number = {2},
   Pages = {193-193},
   Year = {2014},
   ISSN = {0587-4254},
   url = {http://dx.doi.org/10.5506/APhysPolB.45.193},
   Doi = {10.5506/APhysPolB.45.193},
   Key = {fds313724}
}

@article{fds313719,
   Author = {Isaak, J and Savran, D and Krtička, M and Ahmed, MW and Beller, J and Fiori, E and Glorius, J and Kelley, JH and Löher, B and Pietralla, N and Romig, C and Rusev, G and Scheck, M and Schnorrenberger, L and Silva, J and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zweidinger, M},
   Title = {Constraining nuclear photon strength functions by the decay
             properties of photo-excited states},
   Journal = {Physics Letters B},
   Volume = {727},
   Number = {4-5},
   Pages = {361-365},
   Year = {2013},
   Month = {December},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2013.10.040},
   Abstract = {A new approach for constraining the low-energy part of the
             electric dipole Photon Strength Function (E1-PSF) is
             presented. Experiments at the Darmstadt High-Intensity
             Photon Setup and the High Intensity γ→-Ray Source have
             been performed to investigate the decay properties of 130 Te
             between 5.50 and 8.15 MeV excitation energy. In particular,
             the average γ-ray branching ratio to the ground state and
             the population intensity of low-lying excited states have
             been studied. A comparison to the statistical model shows
             that the latter is sensitive to the low-energy behavior of
             the E1-PSF, while the average ground state branching ratio
             cannot be described by the statistical model in the energy
             range between 5.5 and 6.5 MeV. © 2013 Elsevier
             B.V.},
   Doi = {10.1016/j.physletb.2013.10.040},
   Key = {fds313719}
}

@article{fds313738,
   Author = {Goddard, PM and Cooper, N and Werner, V and Rusev, G and Stevenson, PD and Rios, A and Bernards, C and Chakraborty, A and Crider, BP and Kelley,
             JH and Kwan, E and Glorius, J and Peters, EE and Pietralla, N and Raut, R and Romig, C and Savran, D and Schnorrenberger, L and Smith, MK and Sonnabend, K and Tonchev, AP and Tornow, W and Yates,
             SW},
   Title = {The electric dipole response of $^{76}$Se above 4
             MeV},
   Journal = {Phys. Rev. C},
   Volume = {88},
   Number = {6},
   Pages = {064308},
   Year = {2013},
   Month = {December},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.88.064308},
   Abstract = {The dipole response of $^{76}_{34}$Se in the energy range 4
             to 9 MeV has been analyzed using a $(\vec\gamma,{\gamma}')$
             polarized photon scattering technique, performed at the High
             Intensity $\gamma$-Ray Source facility, to complement
             previous work performed using unpolarized photons. The
             results of this work offer both an enhanced sensitivity scan
             of the dipole response and an unambiguous determination of
             the parities of the observed J=1 states. The dipole response
             is found to be dominated by $E1$ excitations, and can
             reasonably be attributed to a pygmy dipole resonance.
             Evidence is presented to suggest that a significant amount
             of directly unobserved excitation strength is present in the
             region, due to unobserved branching transitions in the
             decays of resonantly excited states. The dipole response of
             the region is underestimated when considering only ground
             state decay branches. We investigate the electric dipole
             response theoretically, performing calculations in a 3D
             cartesian-basis time-dependent Skyrme-Hartree-Fock
             framework.},
   Doi = {10.1103/PhysRevC.88.064308},
   Key = {fds313738}
}

@article{fds313718,
   Author = {Romig, C and Beller, J and Glorius, J and Isaak, J and Kelley, JH and Kwan,
             E and Pietralla, N and Ponomarev, VY and Sauerwein, A and Savran, D and Scheck, M and Schnorrenberger, L and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zilges, A and Zweidinger,
             M},
   Title = {Low-lying dipole strength of the open-shell nucleus
             Mo-94},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {88},
   Number = {4},
   Year = {2013},
   Month = {October},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.88.044331},
   Doi = {10.1103/PhysRevC.88.044331},
   Key = {fds313718}
}

@article{fds313717,
   Author = {Scheck, M and Ponomarev, VY and Fritzsche, M and Joubert, J and Aumann,
             T and Beller, J and Isaak, J and Kelley, JH and Kwan, E and Pietralla, N and Raut, R and Romig, C and Rusev, G and Savran, D and Schorrenberger, L and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zilges, A and Zweidinger, M},
   Title = {Photoresponse of 60Ni below 10-MeV excitation energy:
             Evolution of dipole resonances in fp-shell nuclei near
             N=Z},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {88},
   Number = {4},
   Year = {2013},
   Month = {October},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.88.044304},
   Abstract = {Background: Within the last decade, below the giant dipole
             resonance the existence of a concentration of additional
             electric dipole strength has been established. This
             accumulation of low-lying E1 strength is commonly referred
             to as pygmy dipole resonance (PDR). Purpose: The
             photoresponse of 60Ni has been investigated experimentally
             and theoretically to test the evolution of the PDR in a
             nucleus with only a small neutron excess. Furthermore, the
             isoscalar and isovector M1 resonances were investigated.
             Method: Spin-1 states were excited by exploiting the (γ,γ
             ′ ) nuclear resonance fluorescence technique with
             unpolarized continuous bremsstrahlung as well as with fully
             linearly polarized, quasimonochromatic, Compton-backscattered
             laser photons in the entrance channel of the reaction.
             Results: Up to 10 MeV a detailed picture of J=1 levels was
             obtained. For the preponderant number of the individual
             levels spin and parity were firmly assigned. Furthermore,
             branching ratios, transition widths, and reduced B(E1) or
             B(M1) excitation probability were calculated from the
             measured scattering cross sections. A comparison with
             theoretical results obtained within the quasiparticle phonon
             model allows an insight into the microscopic structure of
             the observed states. Conclusions: Below 10 MeV the directly
             observed E1 strength [ΣB(E1)↑=(153. 8±9.5) e2(fm)2]
             exhausts 0.5% of the Thomas-Reiche-Kuhn sum rule. This value
             increases to 0.8% of the sum rule [ΣB(E1)↑=(250.9±31.1)
             e2(fm)2] when indirectly observed branches to lower-lying
             levels are considered. Two accumulations of M1 excited
             spin-1 states near 8 and 9 MeV excitation energy are
             identified as isoscalar and isovector M1 resonances
             dominated by proton and neutron f 7/2 →f 5/2 spin-flip
             excitations. The B(M1)↑ strength of these structures
             accumulates to 3.94(27)μN2. © 2013 American Physical
             Society.},
   Doi = {10.1103/PhysRevC.88.044304},
   Key = {fds313717}
}

@article{fds313716,
   Author = {Elhami, E and Orce, JN and Scheck, M and Mukhopadhyay, S and Choudry,
             SN and McEllistrem, MT and Yates, SW and Angell, C and Boswell, M and Fallin, B and Howell, CR and Hutcheson, A and Karwowski, HJ and Kelley,
             JH and Parpottas, Y and Tonchev, AP and Tornow, W},
   Title = {Erratum: Experimental study of the low-lying structure of
             94Zr with the (n,nγ) reaction (Physical
             Review C - Nuclear Physics (2008) 78 (064303))},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {88},
   Number = {2},
   Year = {2013},
   Month = {August},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.88.029903},
   Doi = {10.1103/PhysRevC.88.029903},
   Key = {fds313716}
}

@article{fds313739,
   Author = {Löher, B and Derya, V and Aumann, T and Beller, J and Cooper, N and Duchene, M and Endres, J and Fiori, E and Isaak, J and Kelley, J and Knörzer, M and Pietralla, N and Romig, C and Scheck, M and Scheit, H and Silva, J and Tonchev, AP and Tornow, W and Weller, H and Werner, V and Zilges, A},
   Title = {The high-efficiency γ-ray spectroscopy setup γ3 at
             HIγS},
   Volume = {723},
   Pages = {136-142},
   Year = {2013},
   Month = {June},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2013.04.087},
   Abstract = {The existing Nuclear Resonance Fluorescence (NRF) setup at
             the HI{\gamma}S facility at the Triangle Universities
             Nuclear Laboratory at Duke University has been extended in
             order to perform {\gamma}-{\gamma} coincidence experiments.
             The new setup combines large volume LaBr3:Ce detectors and
             high resolution HPGe detectors in a very close geometry to
             offer high efficiency, high energy resolution as well as
             high count rate capabilities at the same time. The
             combination of a highly efficient {\gamma}-ray spectroscopy
             setup with the mono-energetic high-intensity photon beam of
             HI{\gamma}S provides a worldwide unique experimental
             facility to investigate the {\gamma}-decay pattern of dipole
             excitations in atomic nuclei. The performance of the new
             setup has been assessed by studying the nucleus \sulfur at
             8.125 MeV beam energy. The {\gamma}-decay branching ratio
             from the $1^+$ level at 8125.4 keV to the first excited
             $2^+$ state was determined to 15.7(3)%.},
   Doi = {10.1016/j.nima.2013.04.087},
   Key = {fds313739}
}

@article{fds313715,
   Author = {Scheck, M and Ponomarev, VY and Aumann, T and Beller, J and Fritzsche,
             M and Isaak, J and Kelley, JH and Kwan, E and Pietralla, N and Raut, R and Romig, C and Rusev, G and Savran, D and Sonnabend, K and Tonchev, AP and Tornow, W and Weller, HR and Zweidinger, M},
   Title = {Decay pattern of the pygmy dipole resonance in
             Ni-60},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {87},
   Number = {5},
   Year = {2013},
   Month = {May},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.87.051304},
   Doi = {10.1103/PhysRevC.87.051304},
   Key = {fds313715}
}

@article{fds313714,
   Author = {Bhatia, C and Gooden, ME and Tornow, W and Tonchev,
             AP},
   Title = {Ground-state and isomeric-state cross sections for Ta-181(n,
             2n)Ta-180 between 8 and 15 MeV},
   Journal = {Physical Review C},
   Volume = {87},
   Number = {3},
   Year = {2013},
   Month = {March},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.87.031601},
   Doi = {10.1103/PhysRevC.87.031601},
   Key = {fds313714}
}

@article{fds313713,
   Author = {Schwengner, R and Massarczyk, R and Rusev, G and Tsoneva, N and Bemmerer, D and Beyer, R and Hannaske, R and Junghans, AR and Kelley,
             JH and Kwan, E and Lenske, H and Marta, M and Raut, R and Schilling, KD and Tonchev, A and Tornow, W and Wagner, A},
   Title = {Pygmy dipole strength in Kr-86 and systematics of N=50
             isotones},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {87},
   Number = {2},
   Year = {2013},
   Month = {February},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.87.024306},
   Doi = {10.1103/PhysRevC.87.024306},
   Key = {fds313713}
}

@article{fds313743,
   Author = {Ugalde, C and DiGiovine, B and Henderson, D and Holt, RJ and Rehm, KE and Sonnenschein, A and Robinson, A and Raut, R and Rusev, G and Tonchev,
             AP},
   Title = {First determination of an astrophysical cross section with a
             bubble chamber: The N15(α,γ)F19 reaction},
   Journal = {Physics Letters B},
   Volume = {719},
   Number = {1-3},
   Pages = {74-77},
   Year = {2013},
   Month = {February},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2012.12.068},
   Abstract = {We have devised a technique for measuring some of the most
             important nuclear reactions in stars which we expect to
             provide considerable improvement over previous experiments.
             Adapting ideas from dark matter search experiments with
             bubble chambers, we have found that a superheated liquid is
             sensitive to recoils produced from γ rays
             photodisintegrating the nuclei of the liquid. The main
             advantage of the new target-detector system is a gain in
             yield of six orders of magnitude over conventional gas
             targets due to the higher mass density of liquids. Also, the
             detector is practically insensitive to the γ-ray beam
             itself, thus allowing it to detect only the products of the
             nuclear reaction of interest. The first set of tests of a
             superheated target with a narrow bandwidth γ-ray beam was
             completed and the results demonstrate the feasibility of the
             scheme. The new data are successfully described by an
             R-matrix model using published resonance parameters. With
             the increase in luminosity of the next generation γ-ray
             beam facilities, the measurement of thermonuclear rates in
             the stellar Gamow window would become possible. © 2013
             Elsevier B.V.},
   Doi = {10.1016/j.physletb.2012.12.068},
   Key = {fds313743}
}

@article{fds313712,
   Author = {Rusev, G and Tsoneva, N and Dönau, F and Frauendorf, S and Schwengner,
             R and Tonchev, AP and Adekola, AS and Hammond, SL and Kelley, JH and Kwan,
             E and Lenske, H and Tornow, W and Wagner, A},
   Title = {Fine structure of the giant M1 resonance in
             90Zr.},
   Journal = {Physical Review Letters},
   Volume = {110},
   Number = {2},
   Pages = {022503},
   Year = {2013},
   Month = {January},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23383897},
   Abstract = {The M1 excitations in the nuclide 90Zr have been studied in
             a photon-scattering experiment with monoenergetic and
             linearly polarized beams from 7 to 11 MeV. More than 40
             J(π)=1+ states have been identified from observed
             ground-state transitions, revealing the fine structure of
             the giant M1 resonance with a centroid energy of 9 MeV and a
             sum strength of 4.17(56) μ(N)(2). The result for the total
             M1 strength and its fragmentation are discussed in the
             framework of the three-phonon quasiparticle-phonon
             model.},
   Doi = {10.1103/PhysRevLett.110.022503},
   Key = {fds313712}
}

@article{fds313722,
   Author = {Omer, M and Negm, H and Zen, H and Hori, T and Kii, T and Masuda, K and Ohgaki, H and Hajima, R and Hayakawa, T and Daito, and Shizuma, T and Fujiwara, M and Park, SH and Kikuzawa, N and Rusev, G and Tonchev, AP and Wu, YK},
   Title = {Active Interrogation of Nuclear Materials Using LaBr3: Ce
             Detectors},
   Journal = {Energy Procedia},
   Volume = {34},
   Pages = {50-56},
   Year = {2013},
   ISSN = {1876-6102},
   url = {http://dx.doi.org/10.1016/j.egypro.2013.06.732},
   Doi = {10.1016/j.egypro.2013.06.732},
   Key = {fds313722}
}

@article{fds313637,
   Author = {Buntain, J and Lugaro, M and Iliadis, C and Raut, R and Tonchev, A and Karakas, AI},
   Title = {Kr Isotopic Compositions in Stardust SiC grains and AGB
             Winds},
   Journal = {PoS - Proceedings of Science},
   Year = {2012},
   Month = {December},
   Abstract = {Krypton (Kr) is a heavy noble gas that does not chemically
             react and hence does not condense into dust. However, it is
             found in trace amounts inside stardust silicon carbide (SiC)
             grains in meteorites, which are believed to have condensed
             in the C-rich envelopes of low-mass asymptotic giant branch
             (AGB) stars. The measured isotopic composition of Kr clearly
             reveals the signature of the s (slow neutron-capture)
             process. It is likely that Kr is ionised and implanted in
             stardust SiC grains via stellar winds in two different
             evolutionary phases: one during the AGB phase in small
             grains showing low 86 Kr/ 82 Kr, and another during the
             post-AGB phase in large grains showing high 86 Kr/ 82 Kr
             ratios. The low 86 Kr/ 82 Kr ratios observed in stardust SiC
             grains can be explained by model predictions of AGB winds.
             On the other hand, to explain the high 86 Kr/ 82 Kr ratios
             we need to look at the material in the winds of the post-AGB
             phase. We present Kr isotopic compositions predicted by
             s-process AGB-star models of different masses and
             metallicities, and compare them to data from stardust SiC
             grains. We find that to match the high 86 Kr/ 82 Kr ratios
             observed in the large grains, a proton ingestion during the
             thermal pulse (TP) may be required. We also find that the 84
             Kr(n,γ) 85 Kr neutron-capture cross section should to be
             lower than the current estimate in order for our models to
             match the pure s-process value. © Copyright owned by the
             author(s) under the terms of the Creative Commons
             Attribution-NonCommercial-ShareAlike Licence.},
   Key = {fds313637}
}

@article{fds313710,
   Author = {Johnson, MS and Hagmann, CA and Hall, JM and McNabb, DP and Kelley, JH and Huibregtse, C and Kwan, E and Rusev, G and Tonchev,
             AP},
   Title = {Searching for illicit materials using nuclear resonance
             fluorescence stimulated by narrow-band photon
             sources},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             B: Beam Interactions with Materials and Atoms},
   Volume = {285},
   Pages = {72-85},
   Year = {2012},
   Month = {August},
   ISSN = {0168-583X},
   url = {http://dx.doi.org/10.1016/j.nimb.2012.05.029},
   Doi = {10.1016/j.nimb.2012.05.029},
   Key = {fds313710}
}

@article{fds313711,
   Author = {Massarczyk, R and Schwengner, R and Doenau, F and Litvinova, E and Rusev, G and Beyer, R and Hannaske, R and Junghans, AR and Kempe, M and Kelley, JH and Koegler, T and Kosev, K and Kwan, E and Marta, M and Matic,
             A and Nair, C and Raut, R and Schilling, KD and Schramm, G and Stach, D and Tonchev, AP and Tornow, W and Trompler, E and Wagner, A and Yakorev,
             D},
   Title = {Electromagnetic dipole strength of Ba-136 below the neutron
             separation energy},
   Journal = {Physical Review C},
   Volume = {86},
   Number = {1},
   Year = {2012},
   Month = {July},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.86.014319},
   Doi = {10.1103/PhysRevC.86.014319},
   Key = {fds313711}
}

@article{fds313709,
   Author = {Tornow, W and Kelley, JH and Raut, R and Rusev, G and Tonchev, AP and Ahmed, MW and Crowell, AS and Stave, SC},
   Title = {Photodisintegration cross section of the reaction
             He-4(gamma,n)He-3 at the giant dipole resonance
             peak},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {85},
   Number = {6},
   Year = {2012},
   Month = {June},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.85.061001},
   Doi = {10.1103/PhysRevC.85.061001},
   Key = {fds313709}
}

@article{fds313706,
   Author = {Raut, R and Banu, A and Iliadis, C and Kelley, JH and Rusev, G and Schwengner, R and Tonchev, AP and Tornow, W},
   Title = {Cross-section measurements of the 86Kr(γ, n)
             reaction to probe the s-process branching at
             85Kr},
   Journal = {Journal of Physics},
   Volume = {337},
   Number = {1},
   Year = {2012},
   Month = {March},
   ISSN = {1742-6588},
   url = {http://dx.doi.org/10.1088/1742-6596/337/1/012048},
   Abstract = {For the first time, cross-section measurements were carried
             out for the 86 Kr(γ, n) reaction in order to probe the
             s-process branching point nucleus 85 Kr. The branching point
             nuclei in the s-process path are of importance in testing
             and constraining the nucleosynthesis models. Cross-section
             measurement for the photoneutron reaction on the
             neighbouring stable isotope is carried out to deduce the
             aforesaid neutron capture cross-section, as has been adopted
             in the present case of 85 Kr branching point. The
             cross-section results from the 86 Kr(γ, n) reaction were
             compared with the statistical model calculations using TALYS
             code.},
   Doi = {10.1088/1742-6596/337/1/012048},
   Key = {fds313706}
}

@article{fds313696,
   Author = {Raut, R and Tornow, W and Ahmed, MW and Crowell, AS and Kelley, JH and Rusev, G and Stave, SC and Tonchev, AP},
   Title = {Photodisintegration cross section of the reaction
             (4)He(γ,p)(3)H between 22 and 30 MeV.},
   Journal = {Physical Review Letters},
   Volume = {108},
   Number = {4},
   Pages = {042502},
   Year = {2012},
   Month = {January},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.108.042502},
   Abstract = {The two-body photodisintegration cross section of (4)He into
             a proton and triton was measured with monoenergetic photon
             beams in 0.5 MeV energy steps between 22 and 30 MeV.
             High-pressure (4)He-Xe gas scintillators of various (4)He/Xe
             ratios served as targets and detectors. Pure Xe gas
             scintillators were used for background studies. A NaI
             detector together with a plastic scintillator paddle was
             employed for determining the incident photon flux. Our
             comprehensive data set follows the trend of the theoretical
             calculations of the Trento group very well, although our
             data are consistently lower in magnitude by about 5%.
             However, they differ significantly from the majority of the
             previous data, especially from the recent data of Shima et
             al. The latter data had put into question the validity of
             theoretical approaches used to calculate core-collapse
             supernova explosions and big-bang nucleosynthesis abundances
             of certain light nuclei.},
   Doi = {10.1103/PhysRevLett.108.042502},
   Key = {fds313696}
}

@article{fds313707,
   Author = {Hammond, SL and Adekola, AS and Angell, CT and Karwowski, HJ and Kwan,
             E and Rusev, G and Tonchev, AP and Tornow, W and Howell, CR and Kelley,
             JH},
   Title = {Dipole response of 238U to polarized photons below the
             neutron separation energy},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {85},
   Number = {4},
   Year = {2012},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.85.044302},
   Abstract = {Nuclear resonance fluorescence experiments were carried out
             at the High-Intensity γ-ray Source facility at Triangle
             Universities Nuclear Laboratory to characterize the
             low-energy dipole structure of 238U using 100% linearly
             polarized photon beams from 2.0 to 6.2 MeV. 113 transitions
             corresponding to de-excitations to the ground state in 238U
             were observed and the energy, spin, parity, integrated cross
             section, reduced width, and branching ratio were determined
             for each of these identified levels. The total E1 γ-ray
             interaction cross section was calculated and it was deduced
             that the observed concentration of low-lying E1 transitions
             were excited from the low-energy tail of the giant dipole
             resonance and were not a pygmy dipole resonance. Comparisons
             were made between quasiparticle random-phase approximation
             calculations and the experimentally observed strength. The
             observed and predicted M1 strength agreed well with each
             other. However, there was no similar agreement for the E1
             strength. © 2012 American Physical Society.},
   Doi = {10.1103/PhysRevC.85.044302},
   Key = {fds313707}
}

@article{fds313708,
   Author = {Beller, J and Wagner, J and Ahmed, M and Deleanu, D and Filipescu, DM and Glodariu, T and Isaak, J and Kelley, JH and Kwan, E and Pietralla, N and Raut, R and Romig, C and Rusev, G and Scheck, M and Stave, SC and Tonchev,
             A and Tornow, W and Weller, HR and Zamfir, N-V and Zweidinger, M and IOP},
   Title = {Energy separation of the 1(+)/1(-) parity doublet in
             Ne-20},
   Journal = {Journal of Physics},
   Volume = {366},
   Pages = {012003-012003},
   Year = {2012},
   url = {http://dx.doi.org/10.1088/1742-6596/366/1/012003},
   Doi = {10.1088/1742-6596/366/1/012003},
   Key = {fds313708}
}

@article{fds313741,
   Author = {Raut, R and Banu, A and Iliadis, C and Kelley, JH and Rusev, G and Schwengner, R and Tonchev, AP and Tornow, W and IOP},
   Title = {Cross-Section Measurements of the Kr-86(gamma, n) Reaction
             to Probe the s-Process Branching at Kr-85},
   Journal = {Journal of Physics},
   Volume = {337},
   Number = {11},
   Pages = {112501},
   Year = {2012},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/24074078},
   Abstract = {We have carried out photodisintegration cross-section
             measurements on 86Kr using monoenergetic photon beams
             ranging from the neutron separation energy, S(n) =
             9.86  MeV, to 13 MeV. We combine our experimental
             86Kr(γ,n)85Kr cross section with results from our recent
             86Kr(γ,γ') measurement below the neutron separation energy
             to obtain the complete nuclear dipole response of 86Kr. The
             new experimental information is used to predict the neutron
             capture cross section of 85Kr, an important branching point
             nucleus on the abundance flow path during s-process
             nucleosynthesis. Our new and more precise 85Kr(n,γ)86Kr
             cross section allows us to produce more precise predictions
             of the 86Kr abundance from s-process models. In particular,
             we find that the models of the s process in asymptotic giant
             branch stars of mass <1.5M⊙, where the 13C neutron source
             burns convectively rather than radiatively, represent a
             possible solution for the highest 86Kr:82Kr ratios observed
             in meteoritic stardust SiC grains.},
   Doi = {10.1088/1742-6596/337/1/012048},
   Key = {fds313741}
}

@article{fds313746,
   Author = {Omer, M and Negm, H and Zen, H and Hori, T and Kii, T and Masuda, K and Ohgaki, H and Hajima, R and Hayakawa, T and Daito, I and Shizuma, T and Fujiwara, M and Park, SH and Kikuzawa, N and Rusev, G and Tonchev, AP and Wu, YK},
   Title = {Detection of photon-induced excitations in 235U
             with LaBr 3:Ce scintillating detectors},
   Journal = {IEEE Nuclear Science Symposium Conference
             Record},
   Pages = {55-58},
   Year = {2012},
   ISSN = {1095-7863},
   url = {http://dx.doi.org/10.1109/NSSMIC.2012.6551059},
   Abstract = {Excitations in 235U were measured with LaBr3:Ce
             scintillation detectors using the nuclear resonance
             fluorescence (NRF) technique. A NRF experiment was performed
             at the High Intensity γ-ray Source (HIγS) facility using
             quasi-monochromatic circularly or linearly polarized γ-ray
             beams. Photons scattered at 90°relative to the incident
             beam were detected with two different sizes of cylindrical
             LaBr 3:Ce detectors. Clear NRF peaks at 1733 and 1815 keV
             corresponding to de-excitations to the ground state and/or
             low-lying levels in 235U were observed within 77 minutes of
             beam time even under the high background due to the
             self-activity of LaBr3:Ce and the radioactive decay of 214Bi
             nuclei existing in the 235U target. The present study shows
             a possibility of using LaBr3:Ce detector to perform NRF
             experiments, promoting many options for inspection of
             special nuclear materials. © 2012 IEEE.},
   Doi = {10.1109/NSSMIC.2012.6551059},
   Key = {fds313746}
}

@article{fds313692,
   Author = {Rusev, G and Adekola, AS and Dönau, F and Frauendorf, S and Hammond,
             SL and Huibregtse, C and Kelley, JH and Kwan, E and Schwengner, R and Tonchev, AP and Tornow, W and Wagner, A},
   Title = {Fine structure of the giant M1 resonance in
             90Zr},
   Journal = {Journal of Physics},
   Volume = {312},
   Number = {SECTION 9},
   Year = {2011},
   Month = {November},
   ISSN = {1742-6588},
   url = {http://dx.doi.org/10.1088/1742-6596/312/9/092053},
   Abstract = {M1 excitations in the 90 Zr nucleus have been studied in a
             photon-scattering experiment with monoenergetic and 100%
             linearly-polarized beams from 7 to 11 MeV. More than 40 J π
             = 1+ states were identified for the first time from the
             observed ground-state transitions revealing the fine
             structure of the giant M1 resonance with center of gravity
             of 9 MeV and sum strength of 3.8(3) μ N 2 . The results of
             the present work are compared with predictions from the
             shell model and the quasi-particle random-phase
             approximation.},
   Doi = {10.1088/1742-6596/312/9/092053},
   Key = {fds313692}
}

@article{fds313678,
   Author = {Tornow, W and Karwowski, HJ and Kelley, JH and Raut, R and Rusev, G and Stave, SC and Tonchev, AP and Deltuva, A and Fonseca, AC and Marcucci,
             LE and Viviani, M and Kievsky, A and Golak, J and Skibinski, R and Witala,
             H and Schiavilla, R},
   Title = {Two-body photodisintegration of He-3 between 7 and 16
             MeV},
   Journal = {Physics Letters B},
   Volume = {702},
   Number = {2-3},
   Pages = {121-126},
   Year = {2011},
   Month = {August},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2011.06.080},
   Doi = {10.1016/j.physletb.2011.06.080},
   Key = {fds313678}
}

@article{fds313670,
   Author = {Isaak, J and Savran, D and Fritzsche, M and Galaviz, D and Hartmann, T and Kamerdzhiev, S and Kelley, JH and Kwan, E and Pietralla, N and Romig, C and Rusev, G and Sonnabend, K and Tonchev, AP and Tornow, W and Zilges,
             A},
   Title = {Investigation of low-lying electric dipole strength in the
             semimagic nucleus Ca-44},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {83},
   Number = {3},
   Pages = {034304},
   Year = {2011},
   Month = {March},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.83.034304},
   Doi = {10.1103/PhysRevC.83.034304},
   Key = {fds313670}
}

@article{fds313828,
   Author = {Raut, R and Crowell, AS and Fallin, B and Howell, CR and Huibregtse, C and Kelley, JH and Kawano, T and Kwan, E and Rusev, G and Tonchev, AP and Tornow, W and Vieira, DJ and Wilhelmy, JB},
   Title = {Cross section measurements of neutron induced reactions on
             GaAs using monoenergetic beams from 7.5 to 15
             MeV},
   Journal = {Journal of Physics},
   Volume = {312},
   Number = {SECTION 6},
   Pages = {062008-062008},
   Year = {2011},
   url = {http://dx.doi.org/10.1088/1742-6596/312/6/062008},
   Abstract = {Cross section measurements for the neutron induced reactions
             on GaAs have been carried out at ten different neutron
             energies from 7.5 to 15 MeV, using the activation technique.
             The monoenergetic neutron beams were produced via the
             2H(d,n)3He reaction, known for it's high neutron yield in
             the chosen energy regime. GaAs samples were activated along
             with the Au and Al monitor foils, for estimating the
             incident neutron flux. The induced activiy was measured
             using high resolution γ-ray spectroscopy. Five reaction
             channels viz., 69Ga(n, 2n) Ga, 69Ga(n,p)69mZn,
             71Ga(n,p)71mZn, 75As(n, 2n)74As and 75As(n,p)75Ge, have been
             reported for the comprehensive cross section measurements.
             The results are compared with the existing literature data
             and the available evaluations. Statistical model
             calculations, based on the Hauser-Feshbach formalism, have
             been carried out using the TALYS and EMPIRE codes and are
             compared with the experimental values.},
   Doi = {10.1088/1742-6596/312/6/062008},
   Key = {fds313828}
}

@article{fds313691,
   Author = {Raut, R and Crowell, AS and Fallin, B and Howell, CR and Huibregtse, C and Kelley, JH and Kawano, T and Kwan, E and Rusev, G and Tonchev, AP and Tornow, W and Vieira, DJ and Wilhelmy, JB},
   Title = {Cross-section measurements of neutron-induced reactions on
             GaAs using monoenergetic beams from 7.5 to 15
             MeV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {83},
   Number = {4},
   Pages = {044621},
   Year = {2011},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.83.044621},
   Abstract = {Cross-section measurements for neutron-induced reactions on
             GaAs have been carried out at twelve different neutron
             energies from 7.5 to 15 MeV using the activation technique.
             The monoenergetic neutron beams were produced via the
             H2(d,n)He3 reaction. GaAs samples were activated along with
             Au and Al monitor foils to determine the incident neutron
             flux. The activities induced by the reaction products were
             measured using high-resolution γ-ray spectroscopy. Cross
             sections for five reaction channels, viz., Ga69(n,2n)Ga68,
             Ga69(n,p)Zn69m, Ga71(n,p)Zn71m, As75(n,2n)As74, and
             As75(n,p)Ge75, are reported. The results are compared with
             the previous measurements and available data evaluations.
             Statistical-model calculations, based on the Hauser-Feshbach
             formalism, have been carried out using the TALYS and the
             COH3 codes and are compared with the experimental results.
             © 2011 American Physical Society.},
   Doi = {10.1103/PhysRevC.83.044621},
   Key = {fds313691}
}

@article{fds313699,
   Author = {Tonchev, AP and Hammond, SL and Kelley, JH and Kwan, E and Lenske, H and Raut, R and Rusev, G and Tornow, W and Tsoneva, N and IOP},
   Title = {Coarse and Fine Structure of the Pygmy Dipole
             Resonance},
   Journal = {Journal of Physics},
   Volume = {312},
   Number = {9},
   Pages = {092058-092058},
   Year = {2011},
   ISSN = {1742-6588},
   url = {http://dx.doi.org/10.1088/1742-6596/312/9/092058},
   Doi = {10.1088/1742-6596/312/9/092058},
   Key = {fds313699}
}

@article{fds313676,
   Author = {Kwan, E and Rusev, G and Adekola, AS and Dönau, F and Hammond, SL and Howell, CR and Karwowski, HJ and Kelley, JH and Pedroni, RS and Raut, R and Tonchev, AP and Tornow, W},
   Title = {Discrete deexcitations in U235 below 3 MeV from nuclear
             resonance fluorescence},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {83},
   Number = {4},
   Pages = {041601},
   Year = {2011},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.83.041601},
   Abstract = {Gamma-ray transitions in U235 were measured using the (γ,
             γ') reaction below 3 MeV. The nuclear-resonance-fluorescence
             experiment was carried out at the High-Intensity γ-ray
             Source facility using nearly monoenergetic and circularly
             polarized photon beams. More than 20 transitions
             corresponding to deexcitations to the ground state and
             low-lying levels in U235 were observed. The integrated cross
             sections to the excited levels and intensities of branching
             transitions were deduced. The experimental results are
             compared with predictions from a quasiparticle random-phase
             approximation in a deformed basis. © 2011 American Physical
             Society.},
   Doi = {10.1103/PhysRevC.83.041601},
   Key = {fds313676}
}

@article{fds313747,
   Author = {Brady, SL and Gunasingha, R and Yoshizumi, TT and Howell, CR and Crowell, AS and Fallin, B and Tonchev, AP and Dewhirst,
             MW},
   Title = {A feasibility study using radiochromic films for fast
             neutron 2D passive dosimetry.},
   Journal = {Physics in Medicine and Biology},
   Volume = {55},
   Number = {17},
   Pages = {4977-4992},
   Year = {2010},
   Month = {September},
   ISSN = {0031-9155},
   url = {http://dx.doi.org/10.1088/0031-9155/55/17/007},
   Abstract = {The objective of this paper is threefold: (1) to establish
             sensitivity of XRQA and EBT radiochromic films to fast
             neutron exposure; (2) to develop a film response to
             radiation dose calibration curve and (3) to investigate a
             two-dimensional (2D) film dosimetry technique for use in
             establishing an experimental setup for a radiobiological
             irradiation of mice and to assess the dose to the mice in
             this setup. The films were exposed to a 10 MeV neutron beam
             via the (2)H(d,n)(3)He reaction. The XRQA film response was
             a factor of 1.39 greater than EBT film response to the 10
             MeV neutron beam when exposed to a neutron dose of 165 cGy.
             A film response-to-soft tissue dose calibration function was
             established over a range of 0-10 Gy and had a goodness of
             fit of 0.9926 with the calibration data. The 2D film
             dosimetry technique estimated the neutron dose to the mice
             by measuring the dose using a mouse phantom and by placing a
             piece of film on the exterior of the experimental mouse
             setup. The film results were benchmarked using Monte Carlo
             and aluminum (Al) foil activation measurements. The
             radiochromic film, Monte Carlo and Al foil dose measurements
             were strongly correlated, and the film within the mouse
             phantom agreed to better than 7% of the externally mounted
             films. These results demonstrated the potential application
             of radiochromic films for passive 2D neutron
             dosimetry.},
   Doi = {10.1088/0031-9155/55/17/007},
   Key = {fds313747}
}

@article{fds313661,
   Author = {deBoer, RJ and Wiescher, M and Görres, J and Longland, R and Iliadis,
             C and Rusev, G and Tonchev, AP},
   Title = {Photoexcitation of astrophysically important states in . II.
             Ground-state-transition partial widths},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {82},
   Number = {2},
   Pages = {025802},
   Year = {2010},
   Month = {August},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.82.025802},
   Doi = {10.1103/PhysRevC.82.025802},
   Key = {fds313661}
}

@article{fds313744,
   Author = {Carson, S and Iliadis, C and Cesaratto, J and Champagne, A and Downen,
             L and Ivanovic, M and Kelley, J and Longland, R and Newton, JR and Rusev,
             G and Tonchev, AP},
   Title = {Ratio of germanium detector peak efficiencies at photon
             energies of 4.4 and 11.7MeV: Experiment versus
             simulation},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {618},
   Number = {1-3},
   Pages = {190-198},
   Year = {2010},
   Month = {June},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2010.02.128},
   Doi = {10.1016/j.nima.2010.02.128},
   Key = {fds313744}
}

@article{fds313672,
   Author = {Tonchev, AP and Hammond, SL and Kelley, JH and Kwan, E and Lenske, H and Rusev, G and Tornow, W and Tsoneva, N},
   Title = {Spectral structure of the pygmy dipole resonance.},
   Journal = {Physical Review Letters},
   Volume = {104},
   Number = {7},
   Pages = {072501},
   Year = {2010},
   Month = {February},
   ISSN = {0031-9007},
   url = {http://hdl.handle.net/10161/4292 Duke open
             access},
   Abstract = {High-sensitivity studies of E1 and M1 transitions observed
             in the reaction 138Ba(gamma,gamma{'}) at energies below the
             one-neutron separation energy have been performed using the
             nearly monoenergetic and 100% linearly polarized photon
             beams of the HIgammaS facility. The electric dipole
             character of the so-called "pygmy" dipole resonance was
             experimentally verified for excitations from 4.0 to 8.6 MeV.
             The fine structure of the M1 "spin-flip" mode was observed
             for the first time in N=82 nuclei.},
   Doi = {10.1103/PhysRevLett.104.072501},
   Key = {fds313672}
}

@article{fds184703,
   Author = {A.P. Tonchev and S. Hammond and C.R. Howell and A. Hutcheson and T.
             Kawano, J.H. Kelley and E. Kwan and G. Rusev and W. Tornow and D.
             Vieira and J.B. Wilhelmy},
   Title = {Measurement of the 241Am(γ,n)240Am reaction in the giant
             dipole resonance region},
   Journal = {Phys. Rev. C},
   Volume = {82},
   Pages = {054620},
   Year = {2010},
   Key = {fds184703}
}

@article{fds313660,
   Author = {Tonchev, AP and Hammond, SL and Howell, CR and Huibregtse, C and Hutcheson, A and Kelley, JH and Kwan, E and Raut, R and Rusev, G and Tornow, W and Kawano, T and Vieira, DJ and Wilhelmy,
             JB},
   Title = {Measurement of the Am241(γ,n)Am240
             reaction in the giant dipole resonance region},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {82},
   Number = {5},
   Year = {2010},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.82.054620},
   Abstract = {The photodisintegration cross section of the radioactive
             nucleus Am 241 has been obtained using activation techniques
             and monoenergetic γ-ray beams from the HIγS facility. The
             induced activity of Am 240 produced via the Am241(γ,n)
             reaction was measured in the energy interval from 9 to 16
             MeV utilizing high-resolution γ-ray spectroscopy. The
             experimental data for the Am241(γ ,n) reaction in the giant
             dipole resonance energy region are compared with statistical
             nuclear-model calculations. © 2010 The American Physical
             Society.},
   Doi = {10.1103/PhysRevC.82.054620},
   Key = {fds313660}
}

@article{fds313669,
   Author = {Pietralla, N and Li, TC and Pritzsche, M and Ahmed, MW and Savran, D and Tonchev, AP and Tornow, W and Weller, HR and Werner,
             V},
   Title = {Spin and Parity Assignments to Dipole Excitations of the
             Odd-Mass Nucleus Pb-207 from Nuclear Resonance Fluorescence
             Experiments with Linearly-Polarized gamma-Ray
             Beams},
   Journal = {Journal of Physics},
   Volume = {205},
   Pages = {012036-012036},
   Year = {2010},
   url = {http://dx.doi.org/10.1088/1742-6596/205/1/012036},
   Doi = {10.1088/1742-6596/205/1/012036},
   Key = {fds313669}
}

@article{fds313658,
   Author = {Longland, R and Iliadis, C and Rusev, G and Tonchev, AP and deBoer, RJ and Görres, J and Wiescher, M},
   Title = {Photoexcitation of astrophysically important states
             in},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {80},
   Number = {5},
   Pages = {055803},
   Year = {2009},
   Month = {November},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.80.055803},
   Doi = {10.1103/PhysRevC.80.055803},
   Key = {fds313658}
}

@article{fds313655,
   Author = {Hagmann, CA and Hall, JM and Johnson, MS and McNabb, DP and Kelley, JH and Huibregtse, C and Kwan, E and Rusev, G and Tonchev,
             AP},
   Title = {Transmission-based detection of nuclides with nuclear
             resonance fluorescence using a quasimonoenergetic photon
             source},
   Journal = {Journal of Applied Physics},
   Volume = {106},
   Number = {8},
   Pages = {084901-084901},
   Year = {2009},
   Month = {October},
   ISSN = {0021-8979},
   url = {http://dx.doi.org/10.1063/1.3238328},
   Doi = {10.1063/1.3238328},
   Key = {fds313655}
}

@article{fds327379,
   Author = {Gunasingha, R and Howell, C and Crowell, A and Fallin, B and Yoshizumi,
             T and Song, H and Tonchev, A and Brady, S and Anderson-Evans,
             C},
   Title = {SU-FF-T-436: Comparison of Neutron Doses to a Water Target
             Exposed to a 10 MeV Neutron Beam: Foil Activation Method Vs.
             Monte Carlo Simulations},
   Journal = {Medical physics},
   Volume = {36},
   Number = {6Part15},
   Pages = {2622-2623},
   Year = {2009},
   Month = {June},
   url = {http://dx.doi.org/10.1118/1.3181918},
   Doi = {10.1118/1.3181918},
   Key = {fds327379}
}

@article{fds313647,
   Author = {Fritzsche, M and Pietralla, N and Ahmed, MW and Rusev, G and Savran, D and Tonchev, AP and Weller, HR and Zweidinger, M},
   Title = {Weak-coupling of the neutron hole in 207Pb to dipole
             excitations of 208Pb},
   Journal = {AIP Conference Proceedings},
   Volume = {1090},
   Pages = {591-592},
   Year = {2009},
   Month = {April},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.3087098},
   Abstract = {With the nearly monochromatic, linearly polarized photon
             beam at the High Intensity ray source (HlγS) at DFELL
             photon scattering experiments on 206207208 pb have been
             performed. With these experiments Pb(γγ) photon scattering
             reactions could be used to determine spin and parity quantum
             numbers and therefore study the v(3 p -1 )-hole coupling of
             207 Pb to dipole excitations in 208 Pb. © 2009 American
             Institute of Physics.},
   Doi = {10.1063/1.3087098},
   Key = {fds313647}
}

@article{fds313686,
   Author = {Rusev, G and Tonchev, AP and Schwengner, R and Sun, C and Tornow, W and Wu,
             YK},
   Title = {Multipole mixing ratios of transitions in
             B-11},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {79},
   Number = {4},
   Year = {2009},
   Month = {April},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.79.047601},
   Doi = {10.1103/PhysRevC.79.047601},
   Key = {fds313686}
}

@article{fds313745,
   Author = {Chadwick, MB and Little, RC and Kawano, T and Talou, P and Viera, D and Jandel, M and Bredeweg, TA and White, MC and Tonchev, AP and Becker,
             JA},
   Title = {Actinide ENDF/B-VII cross-section evaluations and validation
             testing},
   Journal = {Annals of Nuclear Energy},
   Volume = {36},
   Number = {3},
   Pages = {258-262},
   Year = {2009},
   Month = {April},
   ISSN = {0306-4549},
   url = {http://dx.doi.org/10.1016/j.anucene.2008.11.011},
   Doi = {10.1016/j.anucene.2008.11.011},
   Key = {fds313745}
}

@article{fds167269,
   Author = {R. Longland and C. Iliadis and G. Rusev and A.P. Tonchev and R.J.
             deBoer, J. Görres and M. Wiescher.},
   Title = {Photoexcitation of astrophysically important states in
             26Mg.},
   Journal = {Rev. C 80, 055803},
   Year = {2009},
   Key = {fds167269}
}

@article{fds167270,
   Author = {N. Pietralla. T.C. Li and A.P. Tonchev and M.W. Ahmed and T. Ahn and A.
             Costin, J. Li and S. Muler and I.V. Pinayev and D. Savran and W. Tornow and H.R. Weller and V. WernY.K. Wu.},
   Title = {Spin Assignment to n(p1/2)-hole coupled E1 excitations of
             the odd-mass nucleus 207Pb at HIGS.},
   Journal = {Phys. Lett. B 681, 134},
   Year = {2009},
   Key = {fds167270}
}

@article{fds167275,
   Author = {A. Hutcheson and C. Angell and J.A. Becker and A.S. Crowell and D.
             Dashdorj, B. Fallin and N. Fotiades and C.R. Howell and H. J.
             Karwowski and T. Kawano and J.H. Kelley and E. Kwan and R.A. Macri and R.O.
             Nelson, R. S. Pedroni and A.P. Tonchev and W.
             Tornow.},
   Title = {Neutron-induced partial γ-ray cross-section measurements on
             238U},
   Journal = {Phys. Rev. C 80, 014603},
   Year = {2009},
   Key = {fds167275}
}

@article{fds167276,
   Author = {G. Rusev and A.P. Tonchev and W. Tornow and R. Schwengner and C. Sun and Y.
             K.Wu.},
   Title = {Multipole mixing ratios of transitions in
             11B.},
   Journal = {Phys. Rev. C 79, 047601},
   Year = {2009},
   Key = {fds167276}
}

@article{fds167279,
   Author = {A.P. Tonchev and C. Angell and S. Hammond and A. Hutcheson and H.J.
             Karwowski, J.H. Kelley and E. Kwan and G. Rusev and W. Tornow and N.
             Tsoneva.},
   Title = {Recent Results from the Excitation of Dipole States at the
             HIγS Facility.},
   Journal = {AIP 1090, 74},
   Year = {2009},
   Key = {fds167279}
}

@article{fds313653,
   Author = {Sun, C and Wu, YK and Rusev, G and Tonchev, AP},
   Title = {End-to-end spectrum reconstruction method for analyzing
             Compton gamma-ray beams},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {605},
   Number = {3},
   Pages = {312-317},
   Year = {2009},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2009.03.237},
   Abstract = {A gamma-ray beam produced by Compton scattering of a laser
             beam with a relativistic electron beam has been used for
             nuclear physics research at the high intensity γ-ray source
             (HI γ S) facility at Duke University. The success of many
             experiments using the gamma-ray beam critically depends on
             the accurate knowledge of the gamma-ray beam energy
             distribution which is typically obtained by unfolding a
             measured energy spectrum. Conventionally, the detector
             response function used in the spectrum unfolding is
             simulated by a simple Monte Carlo code in which an isotropic
             gamma-ray event generator is used. However, for a Compton
             scattered gamma-ray beam, this simulation method could lead
             to an inaccurate detector response function, since it
             neglects the spatial and energy distributions of the
             gamma-ray beam. In this paper, we will present a novel
             end-to-end gamma-ray spectrum reconstruction method by
             completely modeling the process of the Compton gamma-ray
             beam production, collimation, transportation and detection.
             Using this method, we have successfully reconstructed the
             energy distribution of HI γ S beams for nuclear physics
             research with a high degree of accuracy. © 2009 Elsevier
             B.V. All rights reserved.},
   Doi = {10.1016/j.nima.2009.03.237},
   Key = {fds313653}
}

@article{fds313654,
   Author = {Bowman, CD and Bilpuch, EG and Bowman, DC and Crowell, AS and Howell,
             CR and McCabe, K and Smith, GA and Tonchev, AP and Tornow, W and Violet, V and Vogelaar, RB and Walter, RL and Yingling, J},
   Title = {Reducing parasitic thermal neutron absorption in graphite
             reactors by 30%},
   Journal = {Nuclear science and engineering : the journal of the
             American Nuclear Society},
   Volume = {161},
   Number = {1},
   Pages = {68-77},
   Year = {2009},
   ISSN = {0029-5639},
   url = {http://dx.doi.org/10.13182/NSE161-68},
   Abstract = {The results of two experiments combined show that the
             diffusion length D for thermal neutrons in the graphite
             studied is 24% larger than expected from classical
             experiments and that the boron equivalent absorption is
             smaller than expected and consistent with zero. Taken
             together, the results indicate a reduction in parasitic
             thermal neutron absorption in heterogeneous graphite
             reactors by about 30%. The first experiment measured the
             z-dependence of thermal neutron flux in a column of 12 t of
             granular graphite with a neutron source at the bottom. A
             second measurement was made by pulsing the column with a
             neutron source at its center and measuring the neutron decay
             rate as a function of time after a pure exponential decay
             had been established. The diffusion coefficient D adjusted
             to a density of 1.60 g/cm 3 is 1.05 ± 0.03 cm compared with
             the commonly accepted value of 0.85 ± 0.013 cm. The
             absorption in our graphite owing to impurities was found to
             be &lt; 10% of that from carbon alone. The parameter ∑ a/D
             that measures neutron loss was determined to be 0.000235 ±
             0.000026 cm -2 for a density of 1.60 g/cm 3 and may be
             compared with the commonly accepted value of 0.000340. The
             performance of graphite thermal spectrum reactors
             constructed using our graphite would be significantly
             enhanced over present expectations because neutron loss to
             graphite is a major factor in the neutron economy of
             graphite-moderated thermal reactors.},
   Doi = {10.13182/NSE161-68},
   Key = {fds313654}
}

@article{fds313664,
   Author = {Sun, C and Li, J and Rusev, G and Tonchev, AP and Wu,
             YK},
   Title = {Energy and energy spread measurements of an electron beam by
             Compton scattering method},
   Journal = {Physical Review Special Topics - Accelerators and
             Beams},
   Volume = {12},
   Number = {6},
   Year = {2009},
   url = {http://dx.doi.org/10.1103/PhysRevSTAB.12.062801},
   Abstract = {A gamma-ray beam produced by Compton scattering of a laser
             beam with an electron beam can be used to measure the
             electron beam parameters. In several published works, a
             simple fitting model has been applied to determine the
             electron beam energy and energy spread without considering
             the gamma beam collimation and electron beam emittance
             effects. This fitting model is rederived in this work, and
             the underlying assumptions and resultant limitations are
             discussed. To overcome these limitations, a new fitting
             model is proposed, which takes into account the collimation
             and emittance effects. Using the new model and a gamma-ray
             beam produced at the high intensity γ-ray sources facility
             at Duke University, we have successfully determined the
             electron beam energy with a relative uncertainty of about
             3×10-5 around 460 MeV as well as the electron beam energy
             spread. We also experimentally demonstrated for the first
             time that a small relative energy change (about 4×10-5) of
             the electron beam by varying the storage ring dipole field
             can be directly detected using the Compton scattering
             technique. © 2009 The American Physical
             Society.},
   Doi = {10.1103/PhysRevSTAB.12.062801},
   Key = {fds313664}
}

@article{fds313666,
   Author = {Hutcheson, A and Angell, C and Becker, JA and Crowell, AS and Dashdorj,
             D and Fallin, B and Fotiades, N and Howell, CR and Karwowski, HJ and Kawano, T and Kelley, JH and Kwan, E and MacRi, RA and Nelson, RO and Pedroni, RS and Tonchev, AP and Tornow, W},
   Title = {Cross sections for U238(n,n'γ) and U238(n,2nγ) reactions
             at incident neutron energies between 5 and 14
             MeV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {80},
   Number = {1},
   Year = {2009},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.80.014603},
   Abstract = {Precision measurements of U238(n,n'γ) and U238(n,2nγ)
             partial cross sections have been performed at Triangle
             Universities Nuclear Laboratory (TUNL) to improve crucial
             data needed for testing nuclear reaction models in the
             actinide mass region. A pulsed and monoenergetic neutron
             beam was used in combination with high-resolution γ-ray
             spectroscopy to obtain partial cross sections for incident
             neutron energies between 5 and 14 MeV. γ-ray yields were
             measured with high-purity germanium clover and planar
             detectors. Measured partial cross-section data are compared
             with previous results using white and monoenergetic neutron
             beams and calculations from the GNASH and TALYS
             Hauser-Feshbach statistical-model codes. Present
             experimental results are in fair to good agreement with most
             of the existing data for the U238(n,n'γ) reaction. However,
             significant discrepancies are observed for the U238(n,2nγ)
             reaction. © 2009 The American Physical Society.},
   Doi = {10.1103/PhysRevC.80.014603},
   Key = {fds313666}
}

@article{fds313652,
   Author = {Tonchev, AP and Hammond, S and Howell, CR and Huibregtse, C and Hutcheson, A and Karwowski, HJ and Kelley, JH and Kwan, E and Rusev, G and Tornow, W and Vieira, DJ and Wilhelmy, JB},
   Title = {Photodisintegration cross section of241Am},
   Journal = {AIP Conference Proceedings},
   Volume = {1099},
   Pages = {820-823},
   Year = {2009},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.3120165},
   Abstract = {The photodisintegration cross section of radioactive 241Am
             has been obtained for the first time using monoenergetic
             γ-ray beams from the HIγS facility. The induced activity
             of240Am produced via the 241Am(γ,n) reaction in the γ-ray
             energy range from 9.5 to 16 MeV was measured by the
             activation technique utilizing high resolution HPGe
             detectors. The 241Am(γ,n) cross section was determined both
             by measuring the absolute γ-ray flux and by comparison to
             the 197Au(γ,n) and 58Ni(γ,n) cross section standards. The
             experimental data for the 241Am(γ,n ) reaction in the giant
             dipole resonance energy region is compared with statistical
             nuclear-model calculations. © 2009 American Institute of
             Physics.},
   Doi = {10.1063/1.3120165},
   Key = {fds313652}
}

@article{fds313700,
   Author = {Bowman, CD and Bowman, DC and Bilpuch, EG and Crowell, AS and Howell,
             CR and McCabe, K and Smith, GA and Tonchev, AP and Tornow, W and Vylet, V and Walter, RL},
   Title = {Neutrons from a proton-driven deuterium target as a possible
             competitor to spallation for nuclear energy
             applications},
   Journal = {Nuclear science and engineering : the journal of the
             American Nuclear Society},
   Volume = {161},
   Number = {1},
   Pages = {119-124},
   Year = {2009},
   ISSN = {0029-5639},
   url = {http://dx.doi.org/10.13182/NSE161-119},
   Abstract = {Measurements are reported on the yield of neutrons from
             protons in the energy range from 7 to 17 MeV striking a
             stopping-length target of deuterium gas. This combination of
             beam and target is being investigated as an alternative to
             spallation for accelerator-driven transmutation technology
             with perhaps equivalent or lower energy cost per neutron.
             The concept includes neutrons produced from a cascade of
             reactions starting with the p + d reaction giving rise to
             subsequent fusion neutrons and neutrons from higher-order
             breakup reactions. In our application the incident proton
             energy is expected to be -100 MeV so that most of the
             neutrons produced in these reactions will be higher-energy
             neutrons that can undergo multiplication in surrounding
             beryllium or lead. The results reported here for lower
             proton energies indicate that the expected fusion and
             higher-order breakup reactions have been observed, and they
             provide the basis for a measurement at 100 MeV to confirm
             the larger proton-induced cascade benefits expected at
             higher proton energies.},
   Doi = {10.13182/NSE161-119},
   Key = {fds313700}
}

@article{fds313702,
   Author = {Pietralla, N and Li, TC and Fritzsche, M and Ahmed, MW and Ahn, T and Costin, A and Enders, J and Li, J and Müller, S and Neumann-Cosel, PV and Pinayev, IV and Ponomarev, VY and Savran, D and Tonchev, AP and Tornow,
             W and Weller, HR and Werner, V and Wu, YK and Zilges,
             A},
   Title = {Competition between excited core states and 1 ℏ ω
             single-particle excitations at comparable energies in
             207Pb from photon scattering},
   Journal = {Physics Letters B},
   Volume = {681},
   Number = {2},
   Pages = {134-138},
   Year = {2009},
   ISSN = {0370-2693},
   url = {http://dx.doi.org/10.1016/j.physletb.2009.09.059},
   Abstract = {The Pb (over(γ, →), γ′) photon scattering reaction has
             been studied with the nearly monochromatic, linearly
             polarized photon beams at the High Intensity γ-ray Source
             (HIγS) at the DFELL. Azimuthal scattering intensity
             asymmetries measured with respect to the polarization plane
             of the beam have been used for the first time to assign both
             the spin and parity quantum numbers of dipole excited states
             of 206,207,208Pb at excitation energies in the vicinity of
             5.5 MeV. Evidence for dominant particle-core coupling is
             deduced from these results along with information on
             excitation energies and electromagnetic transition matrix
             elements. Implications of the existence of weakly coupled
             states built on highly excited core states in competition
             with 1 ℏ ω single particle (hole) excitations at
             comparable energies are discussed. © 2009 Elsevier B.V. All
             rights reserved.},
   Doi = {10.1016/j.physletb.2009.09.059},
   Key = {fds313702}
}

@article{fds313648,
   Author = {Rusev, G and Angell, CT and Beyer, R and Doenau, F and Erhard, M and Grosse, E and Hammond, SL and Hutcheson, AL and Frauendorf, S and Junghans, AR and Kawowski, HJ and Kelley, JH and Klug, J and Kosev, K and Kwan, E and Nair, C and Nikolov, N and Schilling, K-D and Schwengner, R and Tonchev, AP and Tornow, W and Wagner, A},
   Title = {Dipole-Strength Distributions Below the Giant Dipole
             Resonance in the Stable Even-Mass Molybdenum
             Isotopes},
   Journal = {AIP Conference Proceedings},
   Volume = {1099},
   Pages = {799-802},
   Year = {2009},
   ISBN = {978-0-7354-0633-9},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.3120158},
   Abstract = {Dipole-strength distributions in the stable even-mass
             molybdenum isotopes up to the neutron-separation energies
             have been studied in photon-scattering experiments with
             bremsstrahlung at the superconducting electron accelerator
             ELBE at the Research Center Dresden-Rossendorf, Germany, and
             with mono-energetic photon beams at the High Intensity
             Gamma-ray Source facility at Triangle Universities Nuclear
             Laboratory. In order to determine the dipole-strength
             distribution, statistical methods were developed for the
             analysis of the measured spectra. The data obtained for the
             stable even-mass molybdenum isotopes from the present
             (γ,γ') experiments are combined with (γ,n) cross sections
             from the literature resulting in a photoabsorption cross
             section covering the full range from about 4 to 15 MeV,
             which is of interest for nuclear structure as well as for
             nuclear astrophysics network calculations. Novel information
             about the low- energy tail of the Giant Dipole Resonance and
             the energy spreading of its strength is derived. © 2009
             American Institute of Physics.},
   Doi = {10.1063/1.3120158},
   Key = {fds313648}
}

@article{fds313651,
   Author = {Tonchev, AP and Angell, C and Hammond, S and Hutcheson, A and Karwowski,
             HJ and Kelley, JH and Kwan, E and Rusev, G and Tornow, W and Tsoneva,
             N},
   Title = {Recent Results from the Excitation of Dipole States at the
             HI gamma S Facility},
   Journal = {AIP Conference Proceedings},
   Volume = {1090},
   Pages = {74-+},
   Year = {2009},
   ISBN = {978-0-7354-0623-0},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.3087126},
   Abstract = {High-sensitivity studies of El and Ml excitations observed
             in the 138 Ba(γ,γ') reaction at energies below the neutron
             emission threshold have been performed. The electric dipole
             character of the so-called "pygmy" mode was experimentally
             verified for excitations from 4.0 -8.6 MeV. The fine
             structure of the Ml "spin-flip" mode was observed for the
             first time in N = 82 nuclei. © 2009 American Institute of
             Physics.},
   Doi = {10.1063/1.3087126},
   Key = {fds313651}
}

@article{fds313679,
   Author = {Bowman, CD and Vogelaar, RB and Bilpuch, EG and Bowman, DC and Howell,
             CR and Pierson, MA and Tonchev, AP and Tornow, W},
   Title = {Basis for green energy multiplier*alternative nuclear
             technology (GEM*ART)},
   Journal = {Transactions- American Nuclear Society},
   Volume = {100},
   Pages = {578-579},
   Year = {2009},
   ISSN = {0003-018X},
   Key = {fds313679}
}

@article{fds313667,
   Author = {Chadwick, MB and Little, RC and Kawano, T and Talou, P and Viera, D and Jandel, M and Bredeweg, TA and White, MC and Tonchev, AP and Becker,
             JA},
   Title = {Actinide ENDF/B-VII cross section evaluations and validation
             testing},
   Journal = {International Conference on the Physics of Reactors 2008,
             PHYSOR 08},
   Volume = {1},
   Pages = {131-138},
   Year = {2008},
   Month = {December},
   ISBN = {9781617821219},
   Abstract = {We describe advances made recently at Los Alamos for
             ENDF/B-VII, and for future ENDF releases, of actinide cross
             section evaluations. Using americium as an illustrative
             example, we describe recent experiments that have largely
             confirmed the nuclear theory predictions that were the basis
             for the ENDF/B-VII.0 data for these americium reactions. The
             goal of this paper is to highlight some of the open issues
             in our understanding of the actinide nuclear data -
             especially for fast reactor applications - and show examples
             of how experiment, theory, and integral data validation has
             advanced our understanding. We will also describe the usage
             of these data in MCNP and S N radiation transport
             simulations of various integral critical systems, for both
             criticality and for transmutation reaction
             rates.},
   Key = {fds313667}
}

@article{fds313646,
   Author = {Bowman, CD and Bowman, DC and Hill, T and Long, J and Tonchev, AP and Tornow, W and Trouw, F and Vogel, S and Walter, RL and Wender, S and Yuan,
             V},
   Title = {Measurements of Thermal Neutron Diffraction and Inelastic
             Scattering in Reactor-Grade Graphite},
   Journal = {Nuclear science and engineering : the journal of the
             American Nuclear Society},
   Volume = {159},
   Number = {2},
   Pages = {182-198},
   Year = {2008},
   Month = {June},
   ISSN = {0029-5639},
   url = {http://dx.doi.org/10.13182/NSE159-182},
   Doi = {10.13182/NSE159-182},
   Key = {fds313646}
}

@article{fds167410,
   Author = {E. Elhami and J.N. Orce and M. Scheck and S. Mukhopadhyay and S.N.
             Choudry, M.T. McEllistrem and S.W. Yates and C. Angell and M.
             Boswell, B. Fallin and C.R. Howell and A. Hutcheson and H.J.
             Karwowski, J.H. Kelley and Y. Parpottas and A.P. Tonchev and W.
             Tornow},
   Title = {Experimental study of the low-lying structure of 94Zr with
             the (n,n'γ) reaction},
   Journal = {Phys. Rev. C 78, 064303},
   Year = {2008},
   Key = {fds167410}
}

@article{fds313650,
   Author = {Elhami, E and Orce, JN and Scheck, M and Mukhopadhyay, S and Choudry,
             SN and McEllistrem, MT and Yates, SW and Angell, C and Boswell, M and Fallin, B and Howell, CR and Hutcheson, A and Karwowski, HJ and Kelley,
             JH and Parpottas, Y and Tonchev, AP and Tornow, W},
   Title = {Experimental study of the low-lying structure of Zr94 with
             the (n,n'γ) reaction},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {78},
   Number = {6},
   Year = {2008},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.78.064303},
   Abstract = {The low-lying structure of 4094Zr was studied with the
             (n,n'γ) reaction, and a level scheme was established based
             on excitation function and γγ coincidence measurements.
             Branching ratios, multipole mixing ratios, and spin
             assignments were determined from angular distribution
             measurements. Lifetimes of levels up to 3.4 MeV were
             measured by the Doppler-shift attenuation method, and for
             many transitions the reduced transition probabilities were
             determined. In addition to the anomalous 22+ state, which
             has a larger B(E2;22+→01+) value than the B(E2;21+→01+),
             the experimental results revealed interesting and unusual
             properties of the low-lying states in Zr94. In a simple
             interpretation, the excited states are classified in two
             distinct categories, i.e., those populating the 22+ state
             and those decaying to the 21+ state. © 2008 The American
             Physical Society.},
   Doi = {10.1103/PhysRevC.78.064303},
   Key = {fds313650}
}

@article{fds313645,
   Author = {Tonchev, AP and Angell, CT and Boswell, M and Crowell, AS and Fallin, B and Hammond, S and Howell, CR and Hutcheson, A and Karwowski, HJ and Kelley,
             JH and Pedroni, RS and Tornow, W and Becker, JA and Dashdorj, D and Kenneally, J and MacRi, RA and Stoyer, MA and Wu, CY and Bond, E and Chadwick, MB and Fitzpatrick, J and Kawano, T and Rundberg, RS and Slemmons, A and Vieira, DJ and Wilhelmy, JB},
   Title = {Measurement of the Am241(n,2n) reaction cross section from
             7.6 MeV to 14.5 MeV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {77},
   Number = {5},
   Year = {2008},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.77.054610},
   Abstract = {The (n,2n) cross section of the radioactive isotope Am241
             (T1/2=432.6 y) has been measured in the incident neutron
             energy range from 7.6 to 14.5 MeV in steps of a few MeV
             using the activation technique. Monoenergetic neutron beams
             were produced via the H2(d,n)He3 reaction by bombarding a
             pressurized deuterium gas cell with an energetic deuteron
             beam at the TUNL 10-MV Van de Graaff accelerator facility.
             The induced γ-ray activity of Am240 was measured with
             high-resolution HPGe detectors. The cross section was
             determined relative to Al, Ni, and Au neutron activation
             monitor foils, measured in the same geometry. Good agreement
             is obtained with previous measurements at around 9 and 14
             MeV, whereas for a large discrepancy is observed when our
             data are compared to those reported by Perdikakis near 11
             MeV. Very good agreement is found with the END-B/VII
             evaluation, whereas the JENDL-3.3 evaluation is in fair
             agreement with our data. © 2008 The American Physical
             Society.},
   Doi = {10.1103/PhysRevC.77.054610},
   Key = {fds313645}
}

@article{fds313665,
   Author = {Tonchev, AP and Angell, C and Boswell, M and Chyzh, A and Howell, CR and Karwowski, HJ and Kelley, JH and Tornow, W and Tsoneva, N and Wu,
             YK},
   Title = {Study of collective dipole excitations below the giant
             dipole resonance at HIγS},
   Journal = {AIP Conference Proceedings},
   Volume = {891},
   Pages = {339-347},
   Year = {2007},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.2713535},
   Abstract = {The High-Intensity Gamma-ray Source utilizing intra-cavity
             back-scattering of free electron laser photons from
             relativistic electrons allows one to produce a unique beam
             of high-flux gamma rays with 100% polarization and
             selectable energy and energy resolution which is ideal for
             low-energy γ-ray scattering experiments. Nuclear resonance
             fluorescence experiments have been performed on N=82 nuclei.
             High sensitivity studies of E1 and M1 excitations at
             energies close to the neutron emission threshold have been
             performed. The method allows the determination of excitation
             energies, spin, parities, and decay branching ratios of the
             pygmy dipole mode of excitation. The observations are
             compared with calculations using statistical and
             quasi-particle random-phase approximations. © 2007 American
             Institute of Physics.},
   Doi = {10.1063/1.2713535},
   Key = {fds313665}
}

@article{fds313677,
   Author = {Hutcheson, A and Angell, CT and Becker, JA and Boswell, M and Crowell,
             AS and Dashdorj, D and Fallin, B and Fotiades, N and Howell, CR and Karwowski, HJ and Kelley, JH and Kiser, M and Macri, RA and Nelson, RO and Pedroni, RS and Tonchev, AP and Tornow, W and Vieira, DJ and Weisel, GJ and Wilhelmy, JB},
   Title = {Pulsed and monoenergetic beams for neutron cross-section
             measurements using activation and scattering techniques at
             Triangle Universities Nuclear Laboratory},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             B: Beam Interactions with Materials and Atoms},
   Volume = {261},
   Number = {1-2 SPEC. ISS.},
   Pages = {369-372},
   Year = {2007},
   ISSN = {0168-583X},
   url = {http://dx.doi.org/10.1016/j.nimb.2007.04.097},
   Abstract = {In support of the Stewardship Science Academic Alliances
             initiative, an experimental program has been developed at
             Triangle Universities Nuclear Laboratory (TUNL) to measure
             (n,xn) cross-sections with both in-beam and activation
             techniques with the goal of improving the partial
             cross-section database for the NNSA Stockpile Stewardship
             Program. First experimental efforts include excitation
             function measurements on 235,238U and 241Am using pulsed and
             monoenergetic neutron beams with En = 5-15 MeV.
             Neutron-induced partial cross-sections were measured by
             detecting prompt γ rays from the residual nuclei using
             various combinations of clover and planar HPGe detectors in
             the TUNL shielded neutron source area. Complimentary
             activation measurements using DC neutron beams have also
             been performed in open geometry in our second target area.
             The neutron-induced activities were measured in the TUNL
             low-background counting area. In this presentation, we
             include detailed information about the irradiation
             procedures and facilities and preliminary data on first
             measurements using this capability.},
   Doi = {10.1016/j.nimb.2007.04.097},
   Key = {fds313677}
}

@article{fds167386,
   Author = {T.C. Li and N. Pietralla and M. Ahmed and T. Ahn and C. Angell and M.
             Blackston, A. Costin and K. Keeter and J. Li and Y. Parpottas and B.
             Perdue, I.V. Pinayev and G. Rainovski and A.P. Tonchev and W. Tornow and H.R. Weller and Y.K. Wu},
   Title = {Search for magnetic dipole excitation strength in
             40Ar},
   Journal = {Phys. Rev. C 73, 054306},
   Year = {2006},
   Key = {fds167386}
}

@article{fds167387,
   Author = {A. Sabourov and M.W. Ahmed and M.A. Blackston and A.S. Crowell and C.R.
             Howell, B.A. Perdue and K. Sabourov and A. Tonchev and H.R. Weller and R.M. Prior and M.C. Spraker},
   Title = {Astrophysical S factor for the 7Li(d,n0)8Be and 7Li(d,n1)8Be
             reactions},
   Journal = {Phys. Rev. C 73, 015801},
   Year = {2006},
   Key = {fds167387}
}

@article{fds313668,
   Author = {Tonchev, AP and Angell, C and Boswell, M and Howell, CR and Karwowski,
             HJ and Kelley, JH and Tornow, W and Tsoneva, N},
   Title = {Low-energy dipole modes of excitation below the neutron
             separation energy},
   Journal = {AIP Conference Proceedings},
   Volume = {819},
   Pages = {350-354},
   Year = {2006},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.2187883},
   Abstract = {The nuclear resonance fluorescence experiments have been
             performed at the High Intensity Gamma Source (HIγS) on
             138Ba nuclei using four 60% efficient HPGe detectors.
             Excitation energies, spin, parities, and decay branching
             ratios were measured for the low-energy dipole modes of
             excitations. Experimental results on the parity measurement
             below the neutron separation energy shows that all dipole
             states in this energy region exhibit E1 excitation. These
             results are consistent with theoretical prediction of the
             collective isoscalar nature of this low-energy mode of
             excitation. © 2006 American Institute of
             Physics.},
   Doi = {10.1063/1.2187883},
   Key = {fds313668}
}

@article{fds313703,
   Author = {Li, TC and Pietralla, N and Tonchev, AP and Ahmed, MW and Ahn, T and Angell, C and Blackston, MA and Costin, A and Keeter, KJ and Li, J and Lisetskiy, A and Mikhailov, S and Parpottas, Y and Perdue, BA and Rainovski, G and Tornow, W and Weller, HR and Wu,
             YK},
   Title = {First evidence for spin-flip M1 strength in
             Ar40},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {73},
   Number = {5},
   Year = {2006},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.73.054306},
   Abstract = {The Ar40(γ→,γ′) photon scattering reaction was used to
             search for spin-flip M1 strength in Ar40. The nearly
             monochromatic, linearly polarized photon beam of HIγS, in
             an energy region from 7.7 to 11 MeV, was employed in this
             study. 28 dipole excitations were observed. The azimuthal
             intensity asymmetry indicated that all of these states were
             E1 except for the state at Ex=9.757 MeV. Shell-model
             calculations were used to interpret this state as one
             fragment of the spin-flip M1 strength in Ar40. © 2006 The
             American Physical Society.},
   Doi = {10.1103/PhysRevC.73.054306},
   Key = {fds313703}
}

@article{fds313675,
   Author = {Sabourov, A and Ahmed, MW and Blackston, MA and Crowell, AS and Howell,
             CR and Perdue, BA and Sabourov, K and Tonchev, A and Weller, HR and Prior,
             RM and Spraker, MC},
   Title = {Astrophysical S factor for the Li7(d,n0)Be8 and Li7(d,n1)Be8
             reactions},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {73},
   Number = {1},
   Year = {2006},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.73.015801},
   Abstract = {The absolute astrophysical S factor and cross section for
             the Li7(d,n0)Be8 and Li7(d,n1)Be8 reactions have been
             determined using deuteron beams with energies between 45 and
             80 keV. The slope of the S factor is consistent with zero in
             the n0 case but is slightly negative in the n1 case. The S
             factor for the sum of both neutron groups at c.m. energies
             below 70 keV is S(E)=5400(±1500)-37(±21)E keV b, where E
             is the c.m. energy in keV. © 2006 The American Physical
             Society.},
   Doi = {10.1103/PhysRevC.73.015801},
   Key = {fds313675}
}

@article{fds313671,
   Author = {Werner, V and Pietralla, N and Brentano, PV and Kneissl, U and Pitz, HH and Tonchev, A and Ahmed, MW and Fransen, C and Garrel, HV and Kohstall, C and Li, J and Linnemann, A and Müller, S and Pinayev, IV and Savran, D and Scheck, M and Stedile, F and Tornow, W and Walter, S and Weller, HR and Wu,
             YK},
   Title = {New findings for mixed-symmetry states},
   Journal = {AIP Conference Proceedings},
   Volume = {819},
   Pages = {340-344},
   Year = {2006},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.2187881},
   Abstract = {This report summarizes experiments performed on 164Dy using
             photon scattering techniques. The scissors mode in 164Dy has
             been reinvestigated using unpolarized photons from
             bremsstrahlung and polarized photons from a free electron
             laser. The current experiments lead to the observation of a
             new decay mode of the scissors mode in well-deformed rotors.
             © 2006 American Institute of Physics.},
   Doi = {10.1063/1.2187881},
   Key = {fds313671}
}

@article{fds313656,
   Author = {Sabourov, A and Ahmed, MW and Blackston, MA and Crowell, AS and Howell,
             CR and Joshi, K and Nelson, SO and Perdue, BA and Sabourov, K and Tonchev,
             A and Weller, HR and Prior, RM and Spraker, MC and Braizinha, B and Kalantar-Nayestanaki, N},
   Title = {The Li7(d→,n0)Be8 and Li7(d→,n1)Be8 reactions below 160
             keV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {74},
   Number = {6},
   Year = {2006},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.74.064611},
   Abstract = {The polarization observables have been determined for the
             Li7(d→,n0)Be8 and Li7(d→,n1)Be8 reactions at beam
             energies between 80 and 160 keV. A Transition Matrix Element
             (TME) analysis revealed unique, dominant p-wave solutions
             for both neutron channels. The polarization observables were
             compared with distorted wave Born approximation (DWBA) and
             coupled reaction channels (CRC) calculations. The general
             features of the data can be reproduced by the CRC
             calculations when a large target spin-orbit interaction is
             included. However, serious discrepancies are observed when
             the TMEs of the theory and experiment are compared. © 2006
             The American Physical Society.},
   Doi = {10.1103/PhysRevC.74.064611},
   Key = {fds313656}
}

@article{fds313657,
   Author = {Angell, CT and Karwowski, HJ and Kelley, JH and Tonchev, AP and Tornow,
             W},
   Title = {Photo-induced population of the h(11/2) isomeric states in
             (gamma, n) reactions},
   Journal = {AIP Conference Proceedings},
   Volume = {819},
   Pages = {363-+},
   Year = {2006},
   ISBN = {0-7354-0313-9},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.2187885},
   Abstract = {The mechanism of excitation of isomeric h 11/2 states in
             nuclei around the closed shell at N=82 have been studied at
             the High-Intensity Gamma Source (HIγS). We have taken
             advantage of the monoenergetic (ΔE/E=1.5%) and pulsed
             γ-ray-beam from HIγS to perform in-beam spectroscopy
             measurements with an improved level of precision and
             sensitivity. The giant dipole resonances at 15 MeV in the
             N=82 target isotones 138 Ba, 140 Ce, and 142 Nd have been
             excited, and following neutron emission the γ-ray cascades
             leading to the isomeric h 11/2 state and the ground state
             were observed in the N=81 isotones. For all three nuclei a
             very similar de-excitation scheme was found. The only level
             observed from which the isomeric state was populated was
             found to be J π = 7/2 - . The ground state is principally
             populated from the states with spin and parities J π = 1/2
             + , 5/2 + , and 7/2 + . The structure of the N=81 isotones
             and the role of the gateway states in isomer population will
             be discussed. The results of the measurements will be
             compared with statistical model calculations. © 2006
             American Institute of Physics.},
   Doi = {10.1063/1.2187885},
   Key = {fds313657}
}

@article{fds313639,
   Author = {Tonchev, AP and Boswell, M and Howell, CR and Karwowski, HJ and Kelley,
             JH and Tornow, W and Wu, YK},
   Title = {The high intensity gamma-ray source (HI gamma S) and recent
             results},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             B: Beam Interactions with Materials and Atoms},
   Volume = {241},
   Number = {1-4},
   Pages = {170-175},
   Year = {2005},
   Month = {December},
   ISSN = {0168-583X},
   url = {http://dx.doi.org/10.1016/j.nimb.2005.07.080},
   Doi = {10.1016/j.nimb.2005.07.080},
   Key = {fds313639}
}

@article{fds167396,
   Author = {A.P. Tonchev and M. Boswell and C.R. Howell and H.J. Karwowski and J.H. Kelley and W. Tornow and Y.K. Wu},
   Title = {The High Intensity Gamma-Ray Source (HIGS) and Recent
             Results.},
   Journal = {Nucl. Instr. and Methods in Phys. Res. B 241,
             51474},
   Year = {2005},
   Key = {fds167396}
}

@article{fds313640,
   Author = {Tornow, W and Esterline, JH and Howell, CR and Karwowski, HJ and Kelley,
             JH and Tonchev, AP and Li, J and Mikhailov, SF and Pinayev, IV and Wu, YK and Weisel, GJ and Witała, H},
   Title = {Photon analyzing power for the three-body breakup of
             3He at Eγ = 15.0 MeV},
   Journal = {AIP Conference Proceedings},
   Volume = {768},
   Pages = {138-140},
   Year = {2005},
   ISSN = {0094-243X},
   url = {http://dx.doi.org/10.1063/1.1932890},
   Abstract = {Photon analyzing power for the three-body breakup of 3He has
             been studied at Eγ = 15.0 MeV. The measurements were done
             at the HIγS facility at Duke University. © 2005 American
             Institute of Physics.},
   Doi = {10.1063/1.1932890},
   Key = {fds313640}
}

@article{fds313638,
   Author = {Savran, D and Müller, S and Zilges, A and Babilon, M and Ahmed, MW and Kelley, JH and Tonchev, A and Tornow, W and Weller, HR and Pietralla, N and Li, J and Pinayev, IV and Wu, YK},
   Title = {Parity assignments in 172,174Yb using polarized
             photons and the K quantum number in rare earth
             nuclei},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {71},
   Number = {3},
   Year = {2005},
   ISSN = {0556-2813},
   url = {http://hdl.handle.net/10161/11080 Duke open
             access},
   Abstract = {The 100% polarized photon beam at the high intensity γ ray
             source (HIγS) at Duke University has been used to determine
             the parity of six dipole excitations between 2.9 and 3.6 MeV
             in the deformed nuclei 172,174Yb in photon scattering (γ
             →, γ′) experiments. The measured parities are compared
             with previous assignments based on the K quantum number that
             had been assigned in nuclear resonance fluorescence (NRF)
             experiments by using the Alaga rules. A systematic survey of
             the relation between γ-decay branching ratios and parity
             quantum numbers is given for the rare earth nuclei. © 2005
             The American Physical Society.},
   Doi = {10.1103/PhysRevC.71.034304},
   Key = {fds313638}
}

@article{fds313641,
   Author = {Perdue, BA and Ahmed, MW and Tonchev, AP and Weller, HR and Feldman, G and Litvinenko, VN and Pinayev, IV and Norum, BE and Prior, RM and Spraker,
             MC and Sawatzky, BD},
   Title = {Compton scattering of polarized gamma rays by O-16 for
             E-gamma=25-40 MeV},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {70},
   Number = {6},
   Year = {2004},
   Month = {December},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.70.064305},
   Doi = {10.1103/PhysRevC.70.064305},
   Key = {fds313641}
}

@article{fds313635,
   Author = {Sabourov, K and Ahmed, MW and Canon, SR and Crowley, B and Joshi, K and Kelley, JH and Nelson, SO and Perdue, BA and Schreiber, EC and Sabourov,
             A and Tonchev, A and Weller, HR and Wulf, EA and Prior, RM and Spraker, MC and Hofmann, HM and Trini, M},
   Title = {Experimental and Theoretical Study of the D(d,gamma)4He
             Reaction below Ecm = 60 keV},
   Journal = {Physical Review},
   Volume = {C70},
   Number = {6},
   Pages = {064601},
   Publisher = {The American Physical Society},
   Year = {2004},
   Month = {December},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.70.064601},
   Abstract = {New measurements of the analyzing powers A y and T 20 have
             been obtained for the 2 H(d, γ) 4 He reaction at a
             laboratory beam energy of 115 keV. A transition matrix
             element analysis results in a unique solution which
             indicates that the reaction proceeds by 55% E2, 29% E1, and
             16% M2 radiation. These results are shown to be in good
             agreement with the results of a new refined resonating group
             model calculation. The impact of these results on the
             extrapolated value of the astrophysical 5 factor for this
             reaction is discussed.},
   Doi = {10.1103/PhysRevC.70.064601},
   Key = {fds313635}
}

@article{fds313642,
   Author = {Prior, RM and Spraker, MC and Amthor, AM and Keeter, KJ and Nelson, SO and Sabourov, A and Sabourov, K and Tonchev, A and Ahmed, M and Kelley, JH and Tilley, DR and Weller, HR and Hofmann, HM},
   Title = {Energy dependence of the astrophysical S factor for the
             Li-6(p, gamma)Be-7 reaction},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {70},
   Number = {5},
   Year = {2004},
   Month = {November},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.70.055801},
   Doi = {10.1103/PhysRevC.70.055801},
   Key = {fds313642}
}

@article{fds313643,
   Author = {Fransen, C and Pietralla, N and Tonchev, AP and Ahmed, MW and Chen, J and Feldman, G and Kneissl, U and Li, J and Litvinenko, VN and Perdue, B and Pinayev, IV and Pitz, HH and Prior, R and Sabourov, K and Spraker, M and Tornow, W and Weller, HR and Werner, V and Wu, YK and Yates,
             SW},
   Title = {Parity assignments to strong dipole excitations of Zr-92 and
             Mo-96},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {70},
   Number = {4},
   Year = {2004},
   Month = {October},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.70.044317},
   Doi = {10.1103/PhysRevC.70.044317},
   Key = {fds313643}
}

@article{fds313690,
   Author = {Ahmed, MW and Feldman, G and Litvinenko, VN and Nelson, SO and Norum,
             BE and Perdue, B and Pinayev, IV and Sawatzky, B and Tonchev, AP and Wu, Y and Weller, HR},
   Title = {Background reduction in FEL-generated γ-ray beam
             experiments using giant high-peak power pulses},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {516},
   Number = {2-3},
   Pages = {440-444},
   Year = {2004},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/j.nima.2003.08.166},
   Abstract = {A new method to eliminate beam-uncorrelated background in
             photonuclear experiments has been developed at the High
             Intensity Gamma-Ray Source (HIγS). Background suppression
             of over 3 orders-of-magnitude has been achieved by using a
             gain modulation technique to generate giant high-peak power
             (GHPP) pulses in the OK-4/ Duke storage ring FEL. The time
             structure of these laser pulses was tuned so that their
             duration was ∼100 μs, repeated every 50 ms. The
             associated FEL photons were backscattered from 780 MeV
             electrons to produce linearly polarized 40 MeV γ-rays
             having the same time structure as the FEL pulses. As an
             initial test of the technique, a nearly background-free
             measurement of the analyzing power in the Compton scattering
             reaction 16O(γ→,γ)16O was performed. © 2003 Elsevier
             B.V. All rights reserved.},
   Doi = {10.1016/j.nima.2003.08.166},
   Key = {fds313690}
}

@article{fds313649,
   Author = {Nelson, SO and Ahmed, MW and Perdue, BA and Sabourov, K and Sabourov,
             AL and Tonchev, AP and Prior, RM and Spraker, M and Weller,
             HR},
   Title = {Analyzing power measurement for the 14N(→p, γ)
             15O reaction at astrophysically relevant
             energies},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {68},
   Number = {6},
   Pages = {658041-658046},
   Year = {2003},
   Month = {January},
   ISSN = {0556-2813},
   Abstract = {The 14 N(→p, γ) 15 O reaction has been investigated by
             measuring the angular distributions of its cross section and
             analyzing power using a 270-keV polarized proton beam.
             Calculations using a direct-capture-plus-resonance model
             were compared with the data. The results indicate the
             presence of γ transition amplitudes which were not
             considered in previous extrapolations of the astrophysical S
             factor to low energies. The impact on the zero-energy S
             factor of the 14 N(→p, γ) 15 O reaction is
             discussed.},
   Key = {fds313649}
}

@article{fds313680,
   Author = {Tonchev, AP and Nelson, SO and Sabourov, K and Crowley, BT and Joshi, K and Weller, HR and Kelley, JH and Prior, RM and Spraker, M and Kalantar-Nayestanaki, N},
   Title = {The 10B(p→, γ)11C reaction at
             astrophysically relevant energies},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {68},
   Number = {4},
   Pages = {458031-4580312},
   Year = {2003},
   Month = {January},
   ISSN = {0556-2813},
   Abstract = {The 10 B(p→, γ) 11 C reaction was studied by detecting
             the γ-rays produced when 100-, 130-, and 160-keV polarized
             protons were stopped in a thick 10 B target. Polarized and
             unpolarized incident beams were used to measure the cross
             section and vector analyzing power as a function of angle
             and energy for capture to the ground (J π =3/2 - ), the
             second (E=4319 keV, J π =5/2 - ), and the fifth (E=6478
             keV, J π =7/2 - ) excited states of 11 C. The data were
             analyzed to obtain the amplitudes and phases of the
             contributing transition-matrix elements at each measured
             energy for all three transitions. Values of the
             astrophysical S factors were obtained from the cross section
             data and are compared to previous results. A direct capture
             plus resonance model calculation was performed in an attempt
             to account for all measured quantities. It was found that
             the large (∼32%) value of A y (90°) observed in the case
             of capture to the ground state could be accounted for by
             including the subthreshold resonance at 8420
             keV.},
   Key = {fds313680}
}

@article{fds313689,
   Author = {Pietralla, N and Weller, HR and Litvinenko, VN and Ahmed, MW and Tonchev, AP},
   Title = {Parity measurements of nuclear dipole excitations using
             FEL-generated gamma-rays at HI gamma S},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {483},
   Number = {1-2},
   Pages = {556-559},
   Year = {2002},
   Month = {May},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/S0168-9002(02)00381-9},
   Doi = {10.1016/S0168-9002(02)00381-9},
   Key = {fds313689}
}

@article{fds313693,
   Author = {Pietralla, N and Litvinenko, VN and Hartman, S and Mikhailov, FF and Pinayev, IV and Swift, G and Ahmed, MW and Kelley, JH and Nelson, SO and Prior, R and Sabourov, K and Tonchev, AP and Weller,
             HR},
   Title = {Identification of the Jπ=1- two-phonon state of
             88Sr},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {65},
   Number = {4},
   Pages = {473051-473053},
   Year = {2002},
   Month = {April},
   ISSN = {0556-2813},
   Abstract = {The linearly polarized γ-ray beam produced by the HIγS
             facility has been used to determine the parity of two
             previously known dipole excitations in 88 Sr. The azimuthal
             asymmetry of γ rays produced in the process of nuclear
             resonance fluorescence indicated that the dipole state at
             4.742 MeV, recently discussed as a new form of M 1
             excitation, is in fact a 1 - (E1) state. The 1 - state at
             4.742 MeV must, therefore, be reconsidered as the J π = 1
             -1 member of the quadrupole-octupole coupled two-phonon
             multiplet. A second state at 7.53.5 MeV was also assigned J
             π = 1 - .},
   Key = {fds313693}
}

@article{fds313701,
   Author = {Pietralla, N and Berant, Z and Litvinenko, VN and Hartman, S and Mikhailov, FF and Pinayev, IV and Swift, G and Ahmed, MW and Kelley, JH and Nelson, SO and Prior, R and Sabourov, K and Tonchev, AP and Weller,
             HR},
   Title = {Parity measurements of nuclear levels using a
             free-electron-laser generated gamma-ray beam},
   Journal = {Physical Review Letters},
   Volume = {88},
   Number = {1},
   Pages = {012502},
   Year = {2002},
   Month = {January},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.88.012502},
   Abstract = {The quality and intensity of gamma rays at the High
             Intensity gamma-ray Source are shown to make nuclear
             resonance fluorescence studies possible at a new level of
             precision and efficiency. First experiments have been
             carried out using an intense (10(7) gamma/s) beam of 100%
             linearly polarized, nearly monoenergetic, gamma rays on the
             semimagic nucleus (138)Ba. Negative parity quantum numbers
             have been assigned to 18 dipole excitations of (138)Ba
             between 5.5 MeV and 6.5 MeV from azimuthal gamma-intensity
             asymmetries.},
   Doi = {10.1103/PhysRevLett.88.012502},
   Key = {fds313701}
}

@article{fds313698,
   Author = {Pietralla, N and Litvinenko, VN and Hartman, S and Mikhailov, FF and Pinayev, IV and Swift, G and Ahmed, MW and Kelley, JH and Nelson, SO and Prior, R and Sabourov, K and Tonchev, AP and Weller,
             HR},
   Title = {Erratum: Identification of the Jπ=1-
             two-phonon state of 88Sr (Physical Review C
             (2002) 65 (047305))},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {65},
   Number = {6},
   Pages = {699011},
   Year = {2002},
   Month = {January},
   ISSN = {0556-2813},
   Key = {fds313698}
}

@article{fds313644,
   Author = {Nesaraja, CD and Brune, CR and Crowley, BT and Kelley, JH and Nelson,
             SO and Prior, RM and Sabourov, K and Tilley, DR and Tonchev, A and Weller,
             HR},
   Title = {Ratio of S factors for (p,gamma) reactions on C-12 and C-13
             at astrophysically relevant energies},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {64},
   Number = {6},
   Pages = {658041-658047},
   Year = {2001},
   Month = {December},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.64.0658XX},
   Abstract = {We present measurements of the 12 C(p, γ 0 ) 13 N/ 13 C(p,
             γ 0 ) 14 N S factor ratio at E p =160 keV. The overall
             result of 0.33±0.03 is in good agreement with the value of
             this ratio obtained from previous experimental values of the
             S factors for the 12 C(p, γ 0 ) 13 N and the 13 C(p, γ 0 )
             14 N reactions. A value for the total S factor ratio of S[
             12 C(p, γ total )]/S[ 13 C(p, γ total )] = 0.24±0.03 is
             computed by correcting the 13 C(p, γ 0 ) S factor for
             transitions to the other intermediate states. The direct +
             resonance model calculation of this ratio and the impact on
             the CNO cycle are also explored.},
   Doi = {10.1103/PhysRevC.64.0658XX},
   Key = {fds313644}
}

@article{fds313674,
   Author = {Gangrsky, YP and Zuzaan, P and Lukashik, NN and Tonchev,
             AP},
   Title = {Izomeric ratios in cross reactions (ny) and
             (γn)},
   Journal = {Izvestiya Akademii Nauk. Ser. Fizicheskaya},
   Volume = {65},
   Number = {1},
   Pages = {111-116},
   Year = {2001},
   Month = {December},
   ISSN = {0367-6765},
   Key = {fds313674}
}

@article{fds313636,
   Author = {Belov, AG and Gangrsky, YP and Melnikova, LM and Ponomarev, VY and Tsoneva, N and Stoyanov, C and Tonchev, A and Balabanov,
             N},
   Title = {Excitation of isomeric 1h 11/2 states in nuclear reactions
             induced by γ rays and neutrons and in beta
             decay},
   Journal = {Physics of Atomic Nuclei},
   Volume = {64},
   Number = {11},
   Pages = {1901-1908},
   Year = {2001},
   Month = {November},
   ISSN = {1063-7788},
   url = {http://dx.doi.org/10.1134/1.1423740},
   Doi = {10.1134/1.1423740},
   Key = {fds313636}
}

@article{fds313685,
   Author = {Tonchev, AP and Harmon, JF},
   Title = {Excitation of the 180mTa isomer in (gamma,n) reactions and
             its astrophysical relevance},
   Journal = {Applied Radiation and Isotopes},
   Volume = {52},
   Number = {4},
   Pages = {873-882},
   Year = {2000},
   Month = {April},
   ISSN = {0969-8043},
   url = {http://dx.doi.org/10.1016/s0969-8043(99)00132-3},
   Abstract = {The yield has been determined for the excitation of 180gTa
             (Jpi = 1+) from the 181Ta(gamma,n) reaction by measurements
             of gamma rays emitted following the electron capture and
             beta-decays of the 8.15 h ground state. The probability
             sigmam/(sigmam + sigmag) for the production of the 180mTa
             isomer (Jpi = 9-) after gamma absorption in the energy
             region from 8 to 13 MeV was deduced. The role of the initial
             and final spins on the reaction yield, along with the
             relevance for nucleosynthesis of 180mTa, is
             discussed.},
   Doi = {10.1016/s0969-8043(99)00132-3},
   Key = {fds313685}
}

@article{fds313694,
   Author = {Tsoneva, N and Stoyanov, C and Gangrsky, YP and Ponomarev, VY and Balabanov, NP and Tonchev, AP},
   Title = {Population of isomers in the decay of the giant dipole
             resonance},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {61},
   Number = {4},
   Pages = {443031-443039},
   Year = {2000},
   Month = {January},
   ISSN = {0556-2813},
   Abstract = {The value of an isomeric ratio (IR) in N = 81 isotones ( 137
             Ba, 139 Ce, 141 Nd, and 143 Sm) is studied by means of the
             (γ,n) reaction. This quantity measures a probability to
             populate the isomeric state in respect to the ground state
             population. In (γ,n) reactions, the giant dipole resonance
             (GDR) is excited and after its decay by a neutron emission,
             the nucleus has an excitation energy of a few MeV. The
             forthcoming γ decay by direct or cascade transitions
             deexcites the nucleus into an isomeric or ground state. It
             has been observed experimentally that the IR for 137 Ba and
             139 Ce equals about 0.13 while in two heavier isotones it is
             even less than half the size. To explain this effect, the
             structure of the excited states in the energy region up to
             6.5 MeV has been calculated within the quasiparticle phonon
             model. Many states are found connected to the ground and
             isomeric states by E1, E2, and M1 transitions. The
             single-particle component of the wave function is
             responsible for the large values of the transitions. The
             calculated value of the isomeric ratio is in very good
             agreement with the experimental data for all isotones. A
             slightly different value of maximum energy with which the
             nuclei rest after neutron decay of the GDR is responsible
             for the reported effect of the A dependence of the
             IR.},
   Key = {fds313694}
}

@article{fds313662,
   Author = {Gangrsky, YP and Zuzaan, P and Kolesnikov, NN and Lukashek, VG and Tonchev, AP},
   Title = {Isomeric ratios in (γ, p) reactions at giant-dipole-resonance
             energies},
   Journal = {Physics of Atomic Nuclei},
   Volume = {62},
   Number = {10},
   Pages = {1615-1620},
   Year = {1999},
   Month = {October},
   ISSN = {1063-7788},
   Abstract = {Isomeric ratios in (γ, p) photonuclear reactions have been
             measured at energies in the giant-dipole-resonance region.
             In these measurements, 98 Mo, 100 Ru, 118 Sn, 120 Sn, and
             122 Sn isotopes have been exposed to bremsstrahlung from a
             microtron. The activation method has been used to measure
             the reaction yields. Data obtained in this way have been
             compared with the results of calculations based on the
             statistical model.},
   Key = {fds313662}
}

@article{fds313695,
   Author = {Tonchev, AP and Harmon, JF and Brey, R},
   Title = {Analysis of ore samples employing photon activation of the
             metastable states of gold and silver},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {422},
   Number = {1-3},
   Pages = {926-928},
   Year = {1999},
   Month = {February},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/S0168-9002(98)01047-X},
   Doi = {10.1016/S0168-9002(98)01047-X},
   Key = {fds313695}
}

@article{fds313697,
   Author = {Tonchev, AP and Harmon, JF and King, BD},
   Title = {Application of low energy photon spectroscopy in isomer
             production of Hf, W, Ir, Pt, Au and Hg using (γ,γ′)
             reactions},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {422},
   Number = {1-3},
   Pages = {510-512},
   Year = {1999},
   Month = {February},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/S0168-9002(98)01076-6},
   Doi = {10.1016/S0168-9002(98)01076-6},
   Key = {fds313697}
}

@article{fds313705,
   Author = {Tonchev, AP and Gangrsky, YP and Belov, AG},
   Title = {New candidates for high spin isomeric targets},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             A: Accelerators, Spectrometers, Detectors and Associated
             Equipment},
   Volume = {422},
   Number = {1-3},
   Pages = {532-535},
   Year = {1999},
   Month = {February},
   ISSN = {0168-9002},
   url = {http://dx.doi.org/10.1016/S0168-9002(98)01080-8},
   Doi = {10.1016/S0168-9002(98)01080-8},
   Key = {fds313705}
}

@article{fds313683,
   Author = {Tonchev, AP and Gangrsky, YP and Belov, AG and Zhuchko,
             VE},
   Title = {Deformation on isomeric excitation of Eu isotopes in and
             reactions},
   Journal = {Physical Review C - Nuclear Physics},
   Volume = {58},
   Number = {5},
   Pages = {2851-2857},
   Year = {1998},
   Month = {November},
   ISSN = {0556-2813},
   url = {http://dx.doi.org/10.1103/PhysRevC.58.2851},
   Doi = {10.1103/PhysRevC.58.2851},
   Key = {fds313683}
}

@article{fds313688,
   Author = {Belov, AG and Gangrsky, YP and Tonchev, AP and Zuzaan,
             P},
   Title = {Excitation of the high-spin 180Hf isomer and
             de-excitation of the 180Ta isomer in (γ, γ′)
             reactions},
   Journal = {Hyperfine Interactions},
   Volume = {107},
   Number = {1-4},
   Pages = {167-173},
   Year = {1997},
   Month = {December},
   ISSN = {0304-3843},
   Abstract = {The reaction mechanism of excitation and de-excitation of
             the high-spin isomers 180 Hf (J = 8 - ) and 180 Ta (J = 9 -
             ) in inelastic gamma-quanta scattering was investigated. An
             anomalously large integral cross section and isomeric ratio
             for 180 Ta in comparison to 180 Hf were obtained. Level
             properties influencing these relations are
             discussed.},
   Key = {fds313688}
}

@article{fds313673,
   Author = {Belov, AG and Gangrsky, YP and Zuzaan, P and Tonchev,
             AP},
   Title = {Excitation of high-spin isomer180Hf and deexcitation of
             high-spin isomer ls"Ta at inelastic scattering of
             y-quanta},
   Journal = {Izvestiya Akademii Nauk. Ser. Fizicheskaya},
   Volume = {61},
   Number = {2},
   Pages = {401-406},
   Year = {1997},
   Month = {December},
   ISSN = {0367-6765},
   Key = {fds313673}
}

@article{fds313681,
   Author = {Belov, AG and Gangrsky, YP and Zhuchko, VE and Tonchev,
             AP},
   Title = {Excitation of isomeric states in (γ, n) and (n, γ)
             reactions on Eu isotopes},
   Journal = {Physics of Atomic Nuclei},
   Volume = {60},
   Number = {11},
   Pages = {1773-1779},
   Year = {1997},
   Month = {November},
   ISSN = {1063-7788},
   Abstract = {Isomeric ratios were measured for (γ, n) and (n, γ)
             reactions on Eu isotopes, which lie at the boundary between
             spherical and deformed nuclei. Targets from 151 Eu and 153
             Eu were irradiated by thermal neutrons and by bremsstrahlung
             photons from a microtron with endpoint energies between 13
             and 22 MeV. The reactions under investigation resulted in
             the excitation of 0 - and 8 - isomeric states in 150 Eu, 152
             Eu, and 154 Eu isotopes. The γ spectra of product nuclides
             were measured to determine the reaction yields. The effect
             of quadrupole deformation on the isomeric ratios is
             discussed.},
   Key = {fds313681}
}

@article{fds313663,
   Author = {Gangrskiǐ, YP and Tonchev, AP and Balabanov, NP},
   Title = {Excitation of isomeric states in photonuclear
             reactions},
   Journal = {Physics of Particles and Nuclei},
   Volume = {27},
   Number = {4},
   Pages = {428-452},
   Year = {1996},
   Month = {July},
   ISSN = {1063-7796},
   Abstract = {The experimental data on the probabilities of exciting
             isomeric states in (γ,γ′) and (γ,n) photonuclear
             reactions at energies from threshold to the giant dipole
             resonance are reviewed. The isomeric ratios for g 9/2 , h
             11/2 , and i 13/2 single-particle neutron states are given,
             together with those for two-quasiparticle states and shape
             isomers. The experimental values of the isomeric ratios are
             compared with the values calculated using the statistical
             model. The properties of nuclear levels in the energy range
             1-6 MeV, via which isomeric states are populated, are
             discussed. © 1996 American Institute of
             Physics.},
   Key = {fds313663}
}

@article{fds313682,
   Author = {Belov, AG and Gangrsky, YP and Tonchev, AP and Balabanov,
             NP},
   Title = {Excitation of isomeric 1h11/2 states in the reactions (γ,
             n)},
   Journal = {Physics of Atomic Nuclei},
   Volume = {59},
   Number = {4},
   Pages = {553-559},
   Year = {1996},
   Month = {April},
   ISSN = {1063-7788},
   Abstract = {The cross sections for the reactions (γ, n) leading to the
             ground and isomeric 1h 11/2 states in 16 isotopes of Pd, Cd,
             Sn, Te, Ba, Ce, Nd, and Sm are measured. The energy of γ
             rays corresponds to the region of the giant dipole
             resonance. The method of induced activity is used in the
             measurements. It is found that isomeric ratios depend on the
             number of intranuclear neutrons and protons and on the
             excitation energy of a residual nucleus. Various factors
             that affect the isomeric ratio are discussed.},
   Key = {fds313682}
}

@article{fds313687,
   Author = {Belov, AG and Gangrsky, YP and Tonchev, AP and Balabanov, NP and Hristov, HG},
   Title = {Measurement of isomeric ratios in the reactions (γ, n) on
             barium isotopes in the giant-dipole-resonance
             region},
   Journal = {Physics of Atomic Nuclei},
   Volume = {59},
   Number = {3},
   Pages = {367-371},
   Year = {1996},
   Month = {March},
   ISSN = {1063-7788},
   Abstract = {The cross sections for the reactions (γ, n) in which odd Ba
             isotopes with A = 129-137 are produced in the ground and
             isomeric h 11/2 states are measured in the
             giant-dipole-resonance region by an activation method. The
             isomeric ratio is obtained as a function of photon energy
             and isotope mass number. Various factors that affect the
             isomeric ratio are discussed.},
   Key = {fds313687}
}

@article{fds313684,
   Author = {Kondev, PG and Tonchev, AP and Khristov, KG and Zhuchko,
             VE},
   Title = {Calculation of bremsstrahlung spectra from a thick tungsten
             radiator as a function of photon energy and
             angle},
   Journal = {Nuclear Instruments and Methods in Physics Research Section
             B: Beam Interactions with Materials and Atoms},
   Volume = {71},
   Number = {2},
   Pages = {126-131},
   Year = {1992},
   Month = {August},
   ISSN = {0168-583X},
   url = {http://dx.doi.org/10.1016/0168-583X(92)95313-G},
   Doi = {10.1016/0168-583X(92)95313-G},
   Key = {fds313684}
}

@article{fds313704,
   Author = {Tonchev, AP and Kondev, PG and Hristov, HG and Gangrsky, YP and Balabanov, NP and Tcholakov, VD},
   Title = {Isomeric yield ratio of134I in photofission of232Th
             and238U},
   Journal = {Journal of Radioanalytical and Nuclear Chemistry},
   Volume = {155},
   Number = {5},
   Pages = {299-309},
   Year = {1991},
   Month = {November},
   ISSN = {0236-5731},
   url = {http://dx.doi.org/10.1007/BF02163877},
   Doi = {10.1007/BF02163877},
   Key = {fds313704}
}


%% Papers Submitted   
@article{fds167265,
   Author = {E. Kwan and G. Rusev and A. S. Adekola and S. Hammond and C.R. Howell and H. J. Karwowski and J.H. Kelley and R. Raut and A. P. Tonchev and W.
             Tornow},
   Title = {Discrete deexcitations in 235U below 3 MeV from nuclear
             resonance fluorescence},
   Journal = {Phys. Rev. C},
   Year = {2010},
   Key = {fds167265}
}


%% Other   
@misc{fds167419,
   Author = {Mark B. Chadwick and Robert C. Little and Toshihiko Kawano and Patrick Talou and David Viera and Marian Jandel and Todd A. Bredeweg and Morgan C. White and Anton P. Tonchev and John A.
             Becker},
   Title = {Actinide ENDF/BVII cross section evaluations and validation
             testing},
   Journal = {International Conference on Reactor Physics, “Nuclear
             Power: A Sustainable Resource” Casino-Kursaal Conference
             Center, Interlaken, Switzerland},
   Year = {2008},
   Key = {fds167419}
}