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<p>We have improved the SemFIS formula by Poenaru et al. (Phys Rev C 74: 014312, 2006), including the effect of angular momentum and a systematic study on alpha decay half-life of ground and isomeric states of <sup>184−224</sup>Bi (<i>Z</i> = 83) is investigated. We further refined the modified SemFIS by Akrawy et al. (Nucl Phys A 1021: 122419, 2022) eliminates its drawbacks in reproducing experimental data on bismuth isotopes, and the improved SemFIS models show higher accuracy in predicting alpha decay half-life. Also, alpha decay half-life is predicted using the Modified Generalized Liquid Drop Model (MGLDM), its improved version with new preformation parameters and other empirical formulas. Among all models, the New Geiger-Nuttall law demonstrates the lowest standard deviation. We hope our predictions will contribute to further experimental inquiries in this domain.</p>

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Comparative study on α-decay of ground and isomeric states of Bi isotopes using improved semi-empirical relationship & modified GLDM

  • 期刊论文

  • 发表日期：

    2025年3月13日

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  • Tinu Ann Jose,
  • K. P. Santhosh

摘要

We have improved the SemFIS formula by Poenaru et al. (Phys Rev C 74: 014312, 2006), including the effect of angular momentum and a systematic study on alpha decay half-life of ground and isomeric states of 184−224Bi (Z = 83) is investigated. We further refined the modified SemFIS by Akrawy et al. (Nucl Phys A 1021: 122419, 2022) eliminates its drawbacks in reproducing experimental data on bismuth isotopes, and the improved SemFIS models show higher accuracy in predicting alpha decay half-life. Also, alpha decay half-life is predicted using the Modified Generalized Liquid Drop Model (MGLDM), its improved version with new preformation parameters and other empirical formulas. Among all models, the New Geiger-Nuttall law demonstrates the lowest standard deviation. We hope our predictions will contribute to further experimental inquiries in this domain.