Proton-induced fission on 241Am, 238U and 237Np at intermediate energies

TL;DR

This paper analyzes proton-induced fission on 241Am, 238U, and 237Np at intermediate energies using the CRISP simulation code, successfully predicting fission probabilities and cross sections that align with experimental data.

Contribution

The study introduces a two-step CRISP model that effectively describes intermediate energy proton-induced fission on heavy nuclei, matching experimental observations.

Findings

CRISP code accurately predicts fission cross sections.

Model results agree with experimental data.

Provides insights into fission probabilities and nucleon evaporation.

Abstract

Intermediate energy data of proton-induced fission on 241Am, 238U and 237Np targets were analysed and investigated using the computational simulation code CRISP. Inelastic interactions of protons on heavy nuclei and both symmetric and asymmetric fission are regarded. The fission probabilities are obtained from the CRISP code calculations by means of the Bohr-Wheeler model. The fission cross sections, the fissility and the number of nucleons evaporated by the nuclei, before and after fission, are calculated and compared with experimental data. Some of the model predictions agree completely with the data. We conclude that our two step model of the CRISP code provides a good description of intermediate energy proton-induced fission.