Evaluation of the Prompt Fission Gamma Properties for Neutron Induced Fission of ~(235,238)U and ~(239)Pu

摘要

We present details of the prompt fission gamma property evaluations included in the released ENDF/B-Ⅷ.O files. The average prompt gamma multiplicity, the average prompt gamma spectrum, the average total prompt gamma energy released and the prompt gamma multiplicity distributions, included in the ENDF/B-Ⅷ.O files, arc presented for ~(235)U(n,f), ~(238)U(n,f), and ~(239)Pu(n,f) reactions, as a function of incident neutron energy up to 30 MeV. The evaluation is based on available experimental data and model calculations. Notable data include recent measurements by experimental groups at Los Alamos and Lawrence Livcrmorc National Laboratories, at Gecl and Budapest, at CEA labs, as well as seminal historical gamma production measurements by Drake at Los Alamos.