Correcting for neutron width fluctuations in Hauser-Feshbach gamma branching ratios

Abstract

Porter-Thomas fluctuations of neutron widths skew compound nuclear decay probabilities from their statistical Hauser-Feshbach values. We present a straightforward method to correct Hauser-Feshbach calculations for these fluctuations, useful for modeling near-threshold competition between gamma and neutron emission following beta decay or when standard width fluctuation corrections are inadequate.

Comments: Proceedings from the 7th international workshop on Compound-Nuclear Reactions and Related Topics will be held from 8 to 12 July 2024 at the International Atomic Energy Agency, Vienna, Austria. 3 pages, 3 figures