Calvin R. Howell, Professor  

Calvin R. Howell

Office Location: 221 Dfell, Durham, NC 27708
Office Phone: (919) 660-2632
Email Address: howell@tunl.duke.edu
Web Page: http://www.tunl.duke.edu/Directory/Faculty/howell/

Specialties:
Experimental nuclear physics
Biological physics

Education:
Ph.D., Duke University, 1984
Master of Art, Duke University, 1980
Bachelor of Science, Davidson College, 1978

Research Categories: Experimental Nuclear Physics

Current projects: Measurement of the cross section for neutron-neutron quasi-free scattering , in neutron deuteron break; Determination of the s-wave neutron-neutron, scattering length using photodisintegration of the triton; Nuclear structure, studies of nuclei used in the search for neutrinoless double beta decay;, Nuclear reaction measurements important for nuclear security and , homeland security; and Carbon and nitrogen accumulation , and translocation in plants.

Research Description:

Professor Howell is the Director of the Triangle Universities Nuclear Laboratory (TUNL). His research interests are the quantum chromodynamics (QCD) description of structure and reactions of few-nucleon systems, Big Bang and explosive nucleosynthesis, and applications of nuclear physics in biology, medicine and national security. His research includes: studies of few-nucleon reaction dynamics, measurements of the neutron-neutron scattering length, photodisintegration of 3He and the triton, and studies of the carbon and nitrogen accumulation and translocation in plants using short-lived radioactive isotopes and positron emission tomography.

Areas of Interest:
experimental nuclear physics
few-nucleon reactions
nuclear astrophysics
nuclear structure
ecology and plant physiology
material analysis and imaging with gamma-rays and neutrons

Recent Publications   (More Publications)

  1. Gai, M; Schweitzer, D; Stern, SR; Young, AH; Smith, R; Cwiok, M; Bihalowicz, JS; Czyrkowski, H; Dabrowski, R; Dominik, W; Fijalkowska, A; Janas, Z; Janiak, L; Korgul, A; Matulewicz, T; Mazzocchi, C; Pfützner, M; Zaremba, M; Balabanski, D; Gheorghe, I; Matei, C; Tesileanu, O; Zamfir, NV; Ahmed, MW; Henshaw, SS; Howell, CR; Mueller, JM; Myers, LS; Stave, S; Sun, C; Weller, HR; Wu, YK; Breskin, A; Dangendorf, V; Tittelmeier, K; Freer, M, Time Projection Chamber (TPC) detectors for nuclear astrophysics studies with gamma beams, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (January, 2019) [doi]  [abs].
  2. Yates, SA; Fallin, B; Howell, CR; Krishichayan, K; Tornow, W; Grimes, SM, Measurement of the Se 80 (γ,n) reaction with linearly polarized γ rays, Physical Review C, vol. 98 no. 5 (November, 2018) [doi]  [abs].
  3. Krishichayan, ; Finch, SW; Howell, CR; Tonchev, AP; Tornow, W, Monoenergetic photon-induced fission cross-section ratio measurements for U 235, U 238, and Pu 239 from 9.0 to 17.0 MeV, Physical Review C, vol. 98 no. 1 (July, 2018) [doi]  [abs].
  4. Sikora, MH; Ahmed, MW; Banu, A; Bartram, C; Crowe, B; Downie, EJ; Feldman, G; Gao, H; Grießhammer, HW; Hao, H; Howell, CR; Karwowski, HJ; Kendellen, DP; Kovash, MA; Li, X; Markoff, DM; Mikhailov, S; Popov, V; Pywell, RE; Silano, JA; Spraker, MC; Wallace, P; Weller, HR; Whisnant, CS; Wu, YK; Xiong, W; Yan, X; Zhao, ZW, Compton scattering from He 4 at 61 MeV, Physical Review C, vol. 96 no. 5 (November, 2017), American Physical Society (APS) [doi]  [abs].
  5. Krishichayan, ; Bhike, M; Finch, SW; Howell, CR; Tonchev, AP; Tornow, W, Photofission cross-section ratio measurement of 235U/238U using monoenergetic photons in the energy range of 9.0–16.6 MeV, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 854 (May, 2017), pp. 40-44, Elsevier BV [doi]  [abs].

Curriculum Vitae

Highlight:

Professor Howell's research interests are the quantum chromodynamics (QCD) description of structure and reactions of few-nucleon systems, Big Bang and explosive nucleosynthesis, and applications of nuclear physics in biology, medicine and national security. His research includes: studies of few-nucleon reaction dynamics, measurements of the neutron-neutron scattering length, photodisintegration of the deuteron and beryllium at energies relevant to astrophysics processes, and studies of the carbon and nitrogen accumulation and translocation in plants using short-lived radioactive isotopes and positron emission tomography.

Current Ph.D. Students   (Former Students)

  • Zhonglin Han  
  • Brent Fallin  
  • Forrest Friesen  
  • David Ticehust  
  • Larry Cumberbatch  
Postdocs Mentored

  • Robert A. Macri (March 01, 2004 - September 30, 2004)  
  • Shigeyuki Tajima (January 1, 2004 - August 31, 2004)  
  • Alexander S. Crowell (January 1, 2002 - December 31, 2007)  
  • Steve Churchwell (1998/01-2001/08)