Neutron Capture Reactions near N=82 Shell-Closure

TL;DR

This paper calculates neutron capture cross-sections near the N=82 shell closure using a semi-microscopic optical model, providing results relevant for astrophysical nucleosynthesis processes.

Contribution

It introduces a semi-microscopic optical model with densities from relativistic mean field theory to compute neutron capture cross-sections near N=82.

Findings

Calculated cross-sections agree with experimental data.

Maxwellian averaged cross-sections are provided.

Results are relevant for astrophysical s- and p-processes.

Abstract

Neutron capture cross-sections have been calculated in nuclei near the N=82 neutron shell closure. These nuclei are of astrophysical interest, participating in s-process and p-process. A semi-microscopic optical model have been used with the potential being obtained through folding the target density with the DDM3Y nucleon nucleon interaction. Theoretical density values have been calculated in the relativistic mean field approach. The calculated cross-section, as a function of neutron energy, agree reasonably well with experimental measurements. Maxwellian averaged cross-sections, important for astrophysical processes, have been calculated.