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Dergiler / Bitlis Eren University Journal of Science and Technology / 2026 / Volume: 10 Issue: 1

Gamow-teller strength and electron capture cross-section calculation by pn-QRPA for selected fp-shell nuclei

Jameel-un Nabı(GIK Institute of Engineering Sciences & Technology)0000-0002-8229-8757
Muhammad Riaz(GIK Institute of Engineering Sciences & Technology)0000-0003-4521-4259
Asim Ullah(GIK Institute of Engineering Sciences & Technology)0000-0002-2653-310X
Sayfa
—
Yayın Tarihi
2020-06-18
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We calculate the electron capture cross-section for selected nuclei at temperature 0.5 MeV, 1.0 MeV and 1.5 MeV that shows the temperature dependence of calculated electron capture cross-section for astrophysical applications.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:The allowed Gamow-Teller (GT) strengths and associated weak interaction rates on fp-shell nuclides are the most familiar processes of spin-isospin (στ) type.
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Temel Bulgular & Veri:These rates play a crucial role in several astrophysical processes, particularly in nuclear synthesis and supernova-explosions.
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Sonuç & Katkı:We calculate the electron capture cross-section for selected nuclei at temperature 0.5 MeV, 1.0 MeV and 1.5 MeV that shows the temperature dependence of calculated electron capture cross-section for astrophysical applications.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Gamow-Teller transitions · Electron capture cross section

Abstract

The allowed Gamow-Teller (GT) strengths and associated weak interaction rates on fp-shell nuclides are the most familiar processes of spin-isospin (στ) type. These rates play a crucial role in several astrophysical processes, particularly in nuclear synthesis and supernova-explosions. As per simulation consequences, the electron capture cross-section on medium-heavy nuclei has a key impact on decreasing the ratio of electron-to-baryon of the stellar matter during the late stages of stars formation. Stellar model based on the theoretical approaches should be tested against the available measured data. In the current work we present calculated Gamow-Teller strength distributions by pn-QRPA model for selected fp-shell nuclei ( 42 Ti, 46 Cr, 50 Fe and 54 Ni) and compare our results with available measured data. The Gamow-Teller strength distributions are well fragmented over the energy range 0-12 MeV and have a good comparison with experimental data. We calculate the electron capture cross-section for selected nuclei at temperature 0.5 MeV, 1.0 MeV and 1.5 MeV that shows the temperature dependence of calculated electron capture cross-section for astrophysical applications.

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Bu Makaleye Atıf Yap

Nabı, J., Riaz, M., Ullah, A. (2020). Gamow-teller strength and electron capture cross-section calculation by pn-QRPA for selected fp-shell nuclei. Bitlis Eren University Journal of Science and Technology, Volume: 10 Issue: 1. https://doi.org/10.17678/beuscitech.640057

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