New charge exchange model of GEANT4 for $^{9}$Be(p,n)$^{9}$B reaction

TL;DR

This paper introduces a new charge exchange model for GEANT4 tailored to the $^{9}$Be(p,n)$^{9}$B reaction, accurately reproducing experimental neutron spectra and peak structures for proton energies between 20 and 35 MeV.

Contribution

A data-driven charge exchange model for GEANT4 that improves neutron spectrum predictions for $^{9}$Be(p,n)$^{9}$B reactions compared to existing models.

Findings

Model accurately reproduces experimental neutron yield spectra.

Peak structures from discrete neutrons are well captured.

Outperforms all considered GEANT4 hadronic models.

Abstract

A new data-based charge exchange model of GEANT4 dedicated to the $^{9}$Be(p,n)$^{9}$B reaction is developed by taking the ENDF/B-VII.1 differential cross-section data as input. Our model yields results that are in good agreement with the experimental neutron yield spectrum data obtained for proton beams of energy $(20\sim35)$ MeV. In particular, in contrast to all the considered GEANT4 hadronic models, the peak structure resulting from the discrete neutrons generated by the charge-exchange reaction is observed to be accurately reproduced in our model.