Publications [#248600] of Werner Tornow

Papers Published
  1. Trotter, DEG; Salinas, F; Chen, Q; Crowell, AS; Glöckle, W; Howell, CR; Roper, CD; Schmidt, D; Šlaus, ; Tang, H; Tornow, W; Walter, RL; Witała, H; Zhou, Z, New Measurement of the 1 S0 Neutron-Neutron Scattering Length Using the Neutron-Proton Scattering Length as a Standard, Physical Review Letters, vol. 83 no. 19 (1999), pp. 3788-3791 .

    This paper reports high-accuracy cross-section data taken for identical kinematic conditions of the neutron-proton (np) and neutron-neutron (nn) final-state interactions in the 2H(n, nnp) reaction at an incident mean neutron energy of 13.0 MeV. These data were analyzed with rigorous three-nucleon calculations to determine the 1S0 np and nn scattering lengths, anp and ann. Our results are ann = -18.7 ± 0.6 fm and anp = -23.5 ± 0.8 fm. The value obtained for ann in the present work is in agreement with that from π-d measurements but disagrees with values obtained from earlier neutron-deuteron breakup studies.