Multi-channel algebraic scattering theory and the structure of exotic compound nuclei

TL;DR

The paper introduces a Multi-Channel Algebraic Scattering (MCAS) theory that accurately predicts bound states and resonances of compound nuclei, including unstable ones, and demonstrates its effectiveness through applications to specific nuclei and cross sections.

Contribution

The paper presents a novel MCAS method capable of determining all bound and resonance states of compound nuclei, even if unstable, enhancing nuclear structure and reaction analysis.

Findings

Successfully applied to mass-7 nuclei and {}^{15}F spectra.

Accurately finds all resonances, including weak and narrow ones.

Provides MCAS results for radiative capture cross sections.

Abstract

A Multi-Channel Algebraic Scattering (MCAS) theory is presented with which the properties of a compound nucleus are found from a coupled-channel problem. The method defines both the bound states and resonances of the compound nucleus, even if the compound nucleus is particle unstable. All resonances of the system are found no matter how weak and/or narrow. Spectra of mass-7 nuclei and of {}^{15}F, and MCAS results for a radiative capture cross section are presented.