An improved Gamow-like formula for cluster radioactivity

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2024-07-11 DOI:10.1016/j.nuclphysa.2024.122929

L.Q. Qi , J.P. Cui , Y.H. Gao , Y.Z. Wang , J.Z. Gu

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引用次数: 0

Abstract

An improved Gamow-like (IMGL) formula for cluster radioactivity half-lives is proposed by introducing an accurate charge radius formula, an analytic expression of assault frequency, the angular momentum carried by the emitted cluster and the isospin effect. By using the IMGL formula, the cluster radioactivity half-lives of 20 nuclei are calculated. It is shown that the IMGL formula improves the agreement with experimental data compared to its predecessor. Then, several sets of other semi-empirical formulas, including the Ni-Ren-Dong-Xu (NRDX), universal decay law (UDL), Tavares-Medeiros (TM), Balasubramaniam-Kumarasamy-Arunachalam-Gupta (BKAG), Viola-Seaborg-Sobiczewski (VSS) and extended universal decay law (EUDL) formulas, are used to calculate the half-lives of cluster radioactivity. By comparing the agreement between the half-lives extracted from different semi-empirical formulas and the experimental data, it is found that the IMGL formula is more accurate than others. At last, within the IMGL formula the cluster radioactivity half-lives of Z=85-97 isotopes that are not available experimentally are predicted. It might be helpful for searching for the new cluster emitters in future measurements.

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改进的伽莫夫类群放射性公式

通过引入精确的电荷半径公式、攻击频率的解析表达式、发射簇携带的角动量和等离子效应，提出了一种改进的簇放射性半衰期伽莫（IMGL）公式。利用 IMGL 公式计算了 20 个原子核的簇放射性半衰期。结果表明，与前者相比，IMGL 公式提高了与实验数据的一致性。然后，利用其他几组半经验公式，包括 Ni-Ren-Dong-Xu 公式（NRDX）、通用衰变律公式（UDL）、Tavares-Medeiros 公式（TM）、Balasubramaniam-Kumarasamy-Arunachalam-Gupta 公式（BKAG）、Viola-Seaborg-Sobiczewski 公式（VSS）和扩展通用衰变律公式（EUDL），计算了原子簇放射性的半衰期。通过比较从不同半经验公式中提取的半衰期与实验数据之间的一致性，发现 IMGL 公式比其他公式更精确。最后，IMGL 公式还预测了实验中没有的 Z=85-97 同位素的簇放射性半衰期。这可能有助于在未来的测量中寻找新的星团发射体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Physics A 物理-物理：核物理

CiteScore

3.60

自引率

7.10%

发文量

113

审稿时长

61 days

期刊介绍： Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.