• Beta decay rates of nuclei with $65 &lt; A &lt; 75$ for pre-supernova and supernova evolution

• Fulltext

https://www.ias.ac.in/article/fulltext/pram/068/03/0423-0433

• Keywords

Beta decay rates; supernova evolution; spectral distribution method.

• Abstract

The half-lives are calculated for the $\beta^{-}$ decay process for nuclei in the mass range $\sim 65-75$ relevant for the core of a massive star at the late burning stage of stellar evolution and the collapse that leads to supernova explosion. These half-lives and rates are calculated by expressing the $\beta^{-}$ Gamow-Teller decay strengths in terms of smoothed bivariate strength densities. These strength densities are constructed in the framework of spectral averaging theory for two-body nuclear Hamiltonian in a large nuclear shell model space. The method has a natural extension to electron captures as well as weak interaction rates for 𝑟 and $rp$-processes.

• Author Affiliations

1. Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064, India

• Pramana – Journal of Physics

Volume 95, 2021
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• Editorial Note on Continuous Article Publication

Posted on July 25, 2019