Consistent Utilization of Shielding Benchmark Experiments

Abstract

Benchmark experiments of neutron propagation in iron and iron--sodium mixtures were used to generate an ''adjusted'' ENDF/B data file for iron, Mat = 1192. In particular, the secondary neutron energy distribution in the continuous level energy range was adjusted by use of such high-energy responses as the /sup 32/S(n,p)/sup 32/P reaction, which are significantly sensitive to changes in that probability distribution. The experimental analysis used carefully checked two-dimensional transport methods to avoid bias in the adjustment procedure due to inadequate calculational methods. 10 figures, 13 tables.