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arXiv · 2503.12089

Study of \b{eta}-Decay, log ft Values and Nuclear Structure Properties of Neutron-rich Ge Nuclei

Jameel-Un Nabi·Wajeeha Khalid·Abdul Kabir·Syeda Anmol Rida
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Abstract

We use the relativistic mean field (RMF) model to conduct a thorough analysis of the ground-state properties of $^{67\text{--}80}$Ge nuclei. Binding energies and neutron skin thicknesses are computed for a total of 14 neutron-rich Ge isotopes. This study provides a comprehensive overview of the RMF model's explanation of nuclear ground-state properties. Furthermore, we examine the $\log ft$ values of the allowed $\beta^\pm$ decays and electron/positron capture rates on Ge isotopes in the mass region $A = 67\text{--}80$. The proton-neutron quasiparticle random phase approximation (pn-QRPA) method was employed to calculate the $\beta$-decay properties of selected Ge isotopes. The calculated $\log ft$ values show good consistency with the measured data. The predicted $\beta$-decay half-lives are within a factor of 2 of the measured values. For high temperature and density conditions in the core of massive stars, the calculated pn-QRPA stellar rates are up to an order of magnitude larger than the independent shell model rates. The findings reported in this study could be valuable for simulating the late-stage stellar evolution of massive stars.

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Jameel-Un Nabi, Wajeeha Khalid, Abdul Kabir, Syeda Anmol Rida. 2025-03-15. Study of \b{eta}-Decay, log ft Values and Nuclear Structure Properties of Neutron-rich Ge Nuclei. https://doi.org/10.1007/s13369-024-09619-w

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