Monte-Carlo simulation for fragment mass and kinetic energy distributions from neutron induced fission of 235U

TL;DR

This paper uses Monte-Carlo simulation to model the mass and kinetic energy distributions of fragments from neutron-induced fission of 235U, successfully reproducing experimental broadening features.

Contribution

The study introduces a Monte-Carlo simulation approach that accurately reproduces experimental broadening in fragment energy distributions from 235U fission.

Findings

Reproduces broadening in kinetic energy distribution around m=109 and m=125.

Shows the impact of neutron emission and primary fragment energy variation on distributions.

Aligns simulation results with experimental data from Belhafaf et al.

Abstract

The mass and kinetic energy distribution of nuclear fragments from thermal neutron induced fission of 235U have been studied using a Monte-Carlo simulation. Besides reproducing the pronounced broadening on the standard deviation of the final fragment kinetic energy distribution $\sigma_{e}(m)$ around the mass number m = 109, our simulation also produces a second broadening around m = 125, that is in agreement with the experimental data obtained by Belhafaf et al. These results are consequence of the characteristics of the neutron emission, the variation in the primary fragment mean kinetic energy and the yield as a function of the mass.