In-medium nucleon-nucleon elastic cross sections determined from nucleon-induced reaction cross sections data

TL;DR

This study uses an improved quantum molecular dynamics model to determine how medium conditions affect nucleon-nucleon elastic cross sections by comparing simulations with experimental data across a range of energies.

Contribution

It introduces a method to extract medium correction factors for nucleon-nucleon elastic cross sections considering isospin, density, and momentum dependencies.

Findings

Identified medium correction factors that depend on isospin, density, and momentum.

Validated the model by matching simulated reaction cross sections with experimental data.

Provided insights into medium modifications of nucleon-nucleon interactions.

Abstract

Within the framework of the improved quantum molecular dynamics model, the medium modifications on the free nucleon-nucleon elastic cross sections are investigated. By using various in-medium nucleon-nucleon elastic cross sections in the model, the nucleon-induced reactions on various targets are simulated, and the excitation functions of reaction cross sections in the energy range from 25 MeV to 1 GeV are calculated. By comparing the calculations with the experimental data, an isospin, density, and momentum-dependence medium correction factor on free nucleon-nucleon elastic cross sections is determined.