Investigating $\beta$-decay properties of spherical nuclei along the possible r-process path

TL;DR

This paper uses an advanced QRPA method with realistic forces to calculate beta-decay properties of neutron-rich nuclei near magic numbers, aiding r-process nucleosynthesis modeling.

Contribution

It introduces a QRPA approach with realistic interactions for beta-decay calculations, including both allowed and forbidden decays, improving accuracy over previous models.

Findings

Calculated half-lives and neutron emission probabilities align well with experimental data.

Provides data crucial for r-process nucleosynthesis simulations.

Enhances understanding of beta-decay in neutron-rich nuclei near N=82 and 126.

Abstract

The spherical QRPA method is used for the calculations of the $\beta$-decay properties of the neutron-rich nuclei in the region near the neutron magic numbers N=82 and N=126 which are important for determination of the r-process path. Our calculations differ from previous works by the use of realistic forces for the proton-neutron interaction. Both the allowed and first-forbidden $\beta$-decays are included. Detailed comparisons with the experimental measurements and the previous shell-model calculations are performed. The results for half-lives and beta-delayed neutron emission probabilities will serve as input for the r-process nucleosynthesis simulations.