{\Large $\gamma$} induced multiparticle emissions of medium mass nuclei at intermediate energies

TL;DR

This paper investigates multiparticle emissions in medium mass nuclei induced by photons at intermediate energies, using a Monte Carlo simulation based on the quasideuteron model, and finds minimal fission events aligning with experimental data.

Contribution

It introduces a Monte Carlo simulation approach for photonuclear reactions in medium mass nuclei at intermediate energies, emphasizing the competition between evaporation and fission processes.

Findings

Almost no fission events observed in medium mass nuclei.

Simulation aligns well with experimental photonuclear cross sections.

Fission is negligible at energies 30-140 MeV.

Abstract

A comprehensive analysis of multiparticle emissions following photon induced reactions at intermediate energies is provided. Photon induced reaction is described in the energy range of $\sim 30-140$ MeV with an approach based on the quasideuteron nuclear photoabsorption model followed by the process of competition between light particle evaporation and fission for the excited nucleus. The evaporation-fission process of the compound nucleus is simulated in a Monte-Carlo framework. The study shows almost no fission events for the medium mass nuclei and reproduces satisfactorily well the available experimental data of photonuclear reaction cross sections at energies $\sim 30-140$ MeV.