arXiv 2109.071782021-09-15nucl-th

用Skyrme-Hartree-Fock双势方法系统研究双质子放射性半衰期

Systematic study of two-proton radioactivity half-lives within the two-potential approach with Skyrme-Hartree-Fock

Xiao Pan, You Tian Zou, Hong Ming Liu, Biao He, Xiao Hua Li, Xi Jun Wu, Zhen Zhang

备注：: 8 pages,2figures
DOI：: 10.1088/1674-1137/ac2421

摘要：

本文采用双势方法系统地研究了双质子（$2p$）的放射性半衰期，并采用Skyrme Hartree Fock方法计算了{SLy 8}的Skyrme有效相互作用下的核势。对于真正的$2p$放射性（$Q_{2p}$ $>$ 0和$Q_p$ $< $ 0，其中$Q_p$和$Q_{2p}$是单质子和双质子放射性的释放能量），实验半衰期与我们的理论计算值之间的标准偏差为{0.701}。此外，我们扩展了该模型，以预测15种可能的$2p$放射性候选物的半衰期，其中$Q_{2p}$ $>$ 0取自评价的原子质量表AME 2016。计算结果表明，考虑轨道角动量的影响，$2p$放射性半衰期的对数$\rm{log}_{10}T_{1/2}$与库仑参数[（$Z_{d}^{0.8}$ + $l^{0.25}$）$Q_{2p}^{-1/2}$ ]之间存在明显的线性关系. Phys. C \textbf{45}，024108（2021）]。为了比较，还使用了广义液滴模型（GLDM）、有效液滴模型（ELDM）和类伽莫夫模型。我们的预测结果与其他模型得到的结果一致。

英文摘要：

In this work, we systematically study the two-proton($2p$) radioactivity half-lives using the two-potential approach while the nuclear potential is obtained by using Skyrme-Hartree-Fock approach with the Skyrme effective interaction of {SLy8}. For true $2p$ radioactivity($Q_{2p}$ $>$ 0 and $Q_p$ $< $0, where the $Q_p$ and $Q_{2p}$ are the released energy of the one-proton and two-proton radioactivity), the standard deviation between the experimental half-lives and our theoretical calculations is {0.701}. In addition, we extend this model to predict the half-lives of 15 possible $2p$ radioactivity candidates with $Q_{2p}$ $>$ 0 taken from the evaluated atomic mass table AME2016. The calculated results indicate that a clear linear relationship between the logarithmic $2p$ radioactivity half-lives $\rm{log}_{10}T_{1/2}$ and coulomb parameters [ ($Z_{d}^{0.8}$+$l^{0.25}$)$Q_{2p}^{-1/2}$] considered the effect of orbital angular momentum proposed by Liu $et$ $al$ [Chin. Phys. C \textbf{45}, 024108 (2021)] is also existed. For comparison, the generalized liquid drop model(GLDM), the effective liquid drop model(ELDM) and Gamow-like model are also used. Our predicted results are consistent with the ones obtained by the other models.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文