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Chinese Physics C > 2025, Vol. 49 > Issue(9): 094110 DOI: 10.1088/1674-1137/adcf11

Effective decay rates of nuclei in astrophysical environments

  • 1.

    China Institute of Atomic Energy, Beijing 102413, China

  • 2.

    University of Chinese Academy of Science, Beijing 101408, China

  • 3.

    Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province, Liangshan 615000, China

  • Nuclear β-decay plays a pivotal role at various stages of stellar evolution. However, the effective decay rates of nuclei in astrophysical environments may differ significantly from their laboratory values. This paper presents a detailed methodology for calculating nuclear half-life under the influence of temperature, electron density, ionization, and incomplete thermal equilibrium. We analyze the impact of astrophysical conditions on the β-decay of 26Al, 59Fe, 79Se, and 205Pb, revealing substantial variations in their effective half-lives within stellar environments. These changes lead to significant differences in nucleosynthetic yields, underscoring the critical importance of accounting for environmental effects when modeling nuclear decay rates.
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Chao Dong, Zhi-Hong Li, Ge-Xing Li, Yun-Ju Li, Na Song, Chen Chen, Jun-Wen Tian, Jia-Ying-Hao Li, Zhi-Cheng Zhang, Hui-Ling Tian and Mei-Yue-Nan Ma. Effective decay rates of nuclei in astrophysical environments[J]. Chinese Physics C. doi: 10.1088/1674-1137/adcf11
Chao Dong, Zhi-Hong Li, Ge-Xing Li, Yun-Ju Li, Na Song, Chen Chen, Jun-Wen Tian, Jia-Ying-Hao Li, Zhi-Cheng Zhang, Hui-Ling Tian and Mei-Yue-Nan Ma. Effective decay rates of nuclei in astrophysical environments[J]. Chinese Physics C. doi:10.1088/1674-1137/adcf11 shu
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Received: 2025-03-04
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