Fission-Product Gamma-Ray and Photoneutron Spectra and Energy-Integrated Sources Informal Report,

摘要

Fission-product gamma-ray and photoneutron spectra resulting from thermal and/or fast fission of 232Th, 233U, 235U, 238U, 239Pu,and 241Pu have been calculated at a number of times following fission. Reported here are spectra at 1, 10, 100, 1000,and 5000hours after fission,as well as time distributions of spectrum-averaged photon and photoneutron energies. Also reported are total fission-product gamma-ray and photoneutron intensities obtained by integrating corresponding spectra at 31time steps from 1to 5000hours following fission. Most spectral data are calculated for shutdown time steps after a one-month irradiation period. In the case of 235U thermal fission,results are also given for one-hour,one-day,and one-year irradiation periods.