Cross Sections for the Astrophysical Neutron Radiative Capture on 12C and 13C Nuclei

TL;DR

This paper models neutron radiative capture on 12C and 13C nuclei using a potential cluster approach, successfully describing experimental cross sections in the astrophysical energy range and including transitions to excited states.

Contribution

It introduces a potential cluster model with Pauli forbidden states to accurately describe neutron capture cross sections on 12C and 13C nuclei.

Findings

Successfully reproduces experimental cross sections from 25 meV to 1 MeV.

Includes E1-transitions from scattering to ground and excited states of 13C.

Provides theoretical calculations for capture on low-lying excited states of 13C.

Abstract

Within the potential cluster model with Pauli forbidden states the possibility of description of the experimental data on the total radiative n12C- and n13C-capture cross sections in the astrophysical energy range from 25 meV to 1.0 MeV is presented. The E1-transition covers the capture data from the scattering states to the ground one of 13C and 14C nuclei. Capture on the three low laying excited states 1/2+, 3/2- and 5/2+ of 13C was calculated.