Impact of Nuclear Deformation on GT Strength Distributions in Iron Isotopes within QRPA-Based Approaches
Abstract
Gamow-Teller (GT) transitions play a crucial role in nuclear structure studies and astrophysical modeling by providing insights into spin-isospin excitations. In this work, GT strength distributions—both B(GT)- and B(GT)+—are systematically calculated for selected iron isotopes within the proton-neutron Quasiparticle Random Phase Approximation (pn-QRPA) framework. The analysis incorporates both particle-hole and particle-particle channels and includes complementary approaches based on the schematic model and the Pyatov method. To assess the impact of nuclear shape, calculations are performed using different quadrupole deformation parameters derived from experimental and theoretical sources. The results demonstrate the sensitivity of GT strength to nuclear deformation and model choice. Comparisons with experimental data highlight the reliability of the deformed QRPA-based models, offering valuable input for astrophysical applications involving weak interaction processes.
Keywords
beta decay Gamow-Teller (GT) transitions proton-neutron Quasiparticle Random Phase Approximation schematic model Pyatov method
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Details
| Primary Language | English |
|---|---|
| Subjects | Nuclear Physics, Plasma Physics; Fusion Plasmas; Electrical Discharges |
| Journal Section | Natural Sciences |
| Authors | |
| Publication Date | September 30, 2025 |
| Submission Date | July 12, 2025 |
| Acceptance Date | September 14, 2025 |
| Published in Issue | Year 2025 Volume: 46 Issue: 3 |
