FAST-NEUTRON TOTAL AND SCATTERING CROSS-SECTIONS OF AG-107 IN THE MEV REGION

Neutron total cross sections are measured from 0.25 to 4.5 MeV at intervals of ≲ 10 keV. Neutron differential elastic- and inelastic-scattering cross sections are measured from 1.5 to 4.0 MeV at intervals of ≦ 0.2 MeV. Cross sections for scattering into more than 20 energy groups are determined. Cross sections calculated from an optical-statistical model are in quantitative agreement with measured neutron total and elastic-scattering cross sections and in qualitative agreement with measured neutron inelastic-scattering cross sections. In the context of this model, significant dependence of the inelastic-scattering process on parity and/or deformation is not in evidence. The interpretation of the observed neutron inelastic neutron scattering results is consistent with previous reported Jπ assignments and the systematics of nuclear level densities. © 1979.