Alpha-decay half-lives, alpha-capture and alpha-nucleus potential

TL;DR

This paper presents a unified model for alpha-decay and alpha-capture, accurately predicting half-lives and cross-sections by considering nuclear interactions, deformations, spins, and parities, with results matching experimental data.

Contribution

It introduces a comprehensive model that simultaneously describes alpha-decay and alpha-capture, incorporating nuclear structure effects for improved accuracy.

Findings

Good agreement with experimental alpha-decay half-lives and alpha-capture cross-sections.

Tabulated alpha-decay half-lives for 1246 nuclei spanning a wide range.

Model effectively accounts for nuclear deformations, spins, and parities.

Abstract

The alpha-decay half-lives and the alpha-capture cross-sections are evaluated in the framework of unified model for alpha-decay and alpha-capture. In the framework of this model the alpha-decay and alpha-capture are considered as penetration of the alpha-particle through the potential barrier formed by nuclear, Coulomb and centrifugal interactions between alpha-particle and nucleus. The spins and the parities of parent and daughter nuclei as well as the quadrupole and hexadecapole deformations of daughter nuclei are taken into account for evaluation of the alpha-decay half-lives. The alpha-decay half-lives for 344 nuclei and the alpha-capture cross-sections of 40Ca, 44Ca, 59Co, 208Pb and 209Bi agree well with the experimental data. The evaluated alpha-decay half-lives within the range 10^{-9} <T_{1/2} < 10^38 s for 1246 alpha-emitters are tabulated.