Fast-neutrons incident on holmium☆

Abstract Differential neutron-scattering cross-sections of 165 Ho are measured at 40 or more scattering angles and at ≈0.5 MeV incident-energy intervals from ≈4.5–10.0 MeV. These results are combined with previously-reported neutron total and scattering cross-sections to construct a comprehensive experimental data base which is interpreted in the context of a coupled-channels model, with attention to the collective excitation of the K =7/2 − ground-state rotational band. Physical aspects are discussed and comparisons made with previous models reported in the literature and with the relevant portions of the ENDF/B-6 evaluated nuclear data file.