Electron capture rates in stars studied with heavy ion charge exchange reactions

2015/10/02 by C. A. Bertulani, Bertulani, C. A.
Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear Theory (nucl-th) #Nuclear physics research studies #Solar and Stellar Astrophysics (astro-ph.SR)

paper · pdf · doi:10.48550/arxiv.1510.00491

openalex publication_date 2015/10/02 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Indirect methods using nucleus-nucleus reactions at high energies (here, high energies mean ∼ 50 MeV/nucleon and higher) are now routinely used to extract information of interest for nuclear astrophysics. This is of extreme relevance as many of the nuclei involved in stellar evolution are short-lived. Therefore, indirect methods became the focus of recent studies carried out in major nuclear physics facilities. Among such methods, heavy ion charge exchange is thought to be a useful tool to infer Gamow-Teller matrix elements needed to describe electron capture rates in stars and also double beta-decay experiments. In this short review, I provide a theoretical guidance based on a simple reaction model for charge exchange reactions.

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