¹⁹⁶Pt(n,xnypγ) reactions using spallation neutrons from E_n=1 to 250 MeV

Neutron-induced reactions on ¹⁹⁶Pt were studied over the neutron energy range from 1 to 250 MeV. A “white” neutron beam was provided by the spallation neutron source of the Weapons Neutron Research facility at the Los Alamos Neutron Science Center. The prompt reaction γ rays were measured with the large-scale Compton-suppressed Ge spectrometer GEANIE. The incident neutron energy was determined by the time-of-flight technique. Excitation functions for γ-ray transitions in ^{184,186,188,190-196}Pt and ^189,191,193Ir isotopes are compared with enhanced Hauser-Feshbach reaction modeling, as implemented in the reaction code GNASH. Overall, the model predictions agree well with the measured γ-ray yields. Discrepancies appear, however, due to inadequate discrete-level information in the calculations describing the preequilibrium process.