Prompt fission neutron and γ ray properties as a function of incident neutron energy

Theoretical Division, Los Alamos National Laboratory, PO Box 1663, MS B283, Los Alamos, New Mexico, USA

^a e-mail: stetcu@lanl.gov

Published online: 13 September 2017

Abstract

The CGMF code provides a complete description of the properties of the prompt neutrons and γ rays, emitted before beta decays. It is based on a Monte Carlo implementation of the Hauser-Feshbach statistical model, which provides an accurate phenomenological description of the de-excitation of the fission fragments toward stable configurations via neutron and γ-ray emissions. This approach allows a detailed description of a large number of observables, such as multiplicity probabilities and correlations between the emitted particles. In this contribution, we briefly review the approach and present selected examples of neutron and γ-ray observables for neutron incident energies from thermal to 20 MeV, and compare against available data for ²³⁵U(n,f) reaction.