Neutron Emission Spectra Induced by 14-MeV Neutrons from the Evaluated Nuclear Data File (ENDF/B-V): A Critical Review

摘要

Neutron emission spectra induced by 14.6-MeV incident neutrons, retrieved from ENDF/B-V, are graphically compared with experimental data by Hermsdorf et al. and Clayeux and Voignier. The elements selected for the comparisons include Na, Mg, Al, Si, Ca, Ti, V, Cr, Fe, Ni, Cu, Nb, W, and Pb. In addition to comparing the evaluated total neutron emission spectra with experimental data, individually evaluated spectra from contributing reactions are presented. Only a few of the evaluated spectra were found to agree well with the measured spectra, namely, those evaluations which utilized advanced nuclear model codes with precompound effects and competing binary and tertiary reactions. Recommendations for removing several defects in most evaluations are made. 3 figures. (ERA citation 05:005098)