2.12 Empirical systematics for selection of threshold reaction excitation functions.

摘要

This report is devoted to empirical excitation functions systematics of threshold reactions (n,p), (n, #alpha#), (n,2n) and (n,3n). The shapes and maximum cross sections of excitation functions were analysed as functions of neutron excess (N-Z) and mass number A. Some systematical trends are shown for the fission and (n,2n) cross sections of fissile isotopes.