ENERGY-DEPENDENCE OF MULTIPOLE STRENGTH DISTRIBUTIONS IN THE S-32(N,P)P-32 REACTION

Double differential cross-section angular distributions were measured for the S-32(n,p)P-31 charge exchange reaction in the 0-degrees less-t han-or-equal-to theta(lab) less-than-or-equal-to 14-degrees angular ra nge. All data presented here were measured simultaneously covering inc ident neutron energies between 60 and 220 MeV using the white neutron source at Los Alamos Meson Physics Facility-Weapons Neutron Research. The Gamow-Teller strengths obtained from a multipole decomposition ana lysis of these S-32(n,p)P-32 data are compared to previously reported S-32(p, n)Cl-32 results as well as to calculated Gamow-Teller strength s obtained using the shell-model code OXBASH and random phase approxim ation (RPA) calculations. The resultant giant dipole and giant spin-di pole cross sections obtained from this multipole decomposition analysi s are also compared with distorted-wave impulse approximations calcula ted with densities obtained from a simple one-particle-one-hole shell model and also densities obtained from RPA calculations.