Isospin Effects on Astrophysical S-Factors

TL;DR

This paper presents a simple model to estimate the ratios of astrophysical S-factors at zero energy for proton and deuteron reactions, aligning well with experimental data and aiding predictions for unstudied reactions.

Contribution

The paper introduces a straightforward model combining compound nucleus formation probability and statistical decay to estimate S-factor ratios, useful for reactions lacking experimental data.

Findings

Model predictions agree with experimental ratios for s-wave dominated reactions.

The approach provides a practical tool for estimating unmeasured reaction S-factors.

The simplicity of the model allows for easy application in astrophysical reaction predictions.

Abstract

We estimate the ratios of bare astrophysical S-factors at zero incident energy for proton and deuteron induced reactions in a model which assumes a compound nucleus formation probability plus a statistical decay. The obtained ratios agree well with available experimental values, as far as the reactions which have dominant s-wave entrance channel components are investigated. Due to its simplicity the model could be used as a guidance for predictions on reactions which have not been investigated yet.