“…All gamma rays were assumed to fall into one of five energy groups: 1, 2, 4, 6, and 8 Mev per photon. Published data('^) on prompt fission gammas and fission product decay gamma spectra were used to determine the gamma generation rates from processes (l) and 2, The calculated neutron fluxes from the thirteen-group cross-section data were used to calculate the gamnna generation rates due to processes (3) and (4). The gammas arising due to inelastic scattering were assumed to have an energy of 1 Mev.…”