Light-ion production from O, Si, Fe and Bi induced by 175 MeV quasi-monoenergetic neutron

TL;DR

This study measures double-differential cross sections for light-ion production from various targets induced by 175 MeV neutrons and compares the results with multiple nuclear reaction models to evaluate their accuracy.

Contribution

It provides new experimental data on light-ion production at 175 MeV neutron energy and assesses several models' performance in simulating these reactions.

Findings

Model calculations show varying degrees of agreement with experimental data.

Pre-equilibrium stage modeling significantly affects the predicted composite particle emission.

Data highlights the importance of surface coalescence in reaction modeling.

Abstract

We have measured double-differential cross sections in the interaction of 175 MeV quasimonoenergetic neutrons with O, Si, Fe and Bi. We have compared these results with model calculations with INCL4.5-Abla07, MCNP6 and TALYS-1.2. We have also compared our data with PHITS calculations, where the pre-equilibrium stage of the reaction was accounted respectively using the JENDL/HE-2007 evaluated data library, the quantum molecular dynamics model (QMD) and a modified version of QMD (MQMD) to include a surface coalescence model. The most crucial aspect is the formation and emission of composite particles in the pre-equilibrium stage.