Further study on mechanism of production of light complex particles in nucleon-induced reactions

TL;DR

This paper improves the ImQMD model for nucleon-induced reactions by refining the surface coalescence mechanism, leading to better agreement with experimental data on light complex particle emission.

Contribution

The study introduces a physically motivated adjustment of phase space parameters in the surface coalescence model within ImQMD, enhancing its predictive accuracy.

Findings

Double differential cross sections match experimental data better.

Refined phase space parameters improve emission predictions.

Enhanced model describes light particle production more accurately.

Abstract

The Improved Quantum Molecular Dynamics (ImQMD) model incorporated with the statistical decay model is used to investigate the intermediate energy nucleon-induced reactions. In our last work, the description on light complex particle emission has been great improved with a phenomenological mechanism called surface coalescence and emission introduced into ImQMD model. In this work, taking account of different specific binding energies and separation energies for various light complex particles, the phase space parameters in surface coalescence model are readjusted. By using the new phase space parameters set with better physical fundament, the double differential cross sections of emitted light complex particles are found to be in better agreement with experimental data.