Influence of low-lying resonances on reaction rates for n10B capture

TL;DR

This study models neutron capture on 10B using a modified potential cluster approach, accounting for resonances, and successfully matches experimental cross sections to predict reaction rates across a range of astrophysical temperatures.

Contribution

It introduces a modified potential cluster model with forbidden states and Young diagram classification to accurately describe neutron capture on 10B, including resonance effects.

Findings

Model agrees with experimental cross section data.

Reaction rate increases significantly above 0.3-0.4 T9 due to resonances.

Provides reaction rate calculations for astrophysical applications.

Abstract

The possibility of description available experimental data for total cross section for reaction of the neutron capture on 10B at energies from 25.3 meV to 1.0 MeV was considered in the frame of the modified potential cluster model with forbidden states, classification of the orbital cluster states according to Young diagrams and taking into account the resonance behavior of phase shifts of the n10B elastic scattering. The obtained results agree with the experimental measurements. The calculated total cross sections are used for obtaining the reaction rate of the neutron capture on 10B at the temperature range from 0.01 to 10 T9. The reaction rate rises essentially at temperatures above 0.3 - 0.4 T9, conditioned by the resonances at the energy above 100 keV.