Heavy ion charge exchange reactions and the link with beta decay processes

TL;DR

This paper develops a DWBA-based theoretical framework for heavy ion charge exchange reactions, highlighting absorption effects and their impact on cross sections, and explores connections with beta decay processes through factorization at low momentum transfer.

Contribution

It introduces a detailed DWBA model for single and double heavy ion charge exchange reactions, emphasizing absorption effects and the potential to extract beta decay strengths.

Findings

Absorption effects significantly reduce CE cross sections.

Factorization at low momentum transfer enables access to beta decay strengths.

Preliminary results for double CE reactions modeled as two-step processes.

Abstract

Within the DWBA framework, we develop a theoretical description of single and double heavy ion charge exchange (CE) reactions. We show that absorption effects are particularly important for heavy ion reactions, leading to a noticeable reduction of the CE cross sections. At low momentum transfer, the single CE cross section can be factorised, thus allowing to evaluate corresponding distortion factors and access beta decay strengths. Applications are shown for a system of experimental interest. Preliminary results are discussed also for double CE reactions, modeled as a two-step mechanisms, i.e. a sequence of two charge-changing processes.