arXiv 2101.071422021-01-18nucl-th

超重核与$α$的衰变半衰期

$α$-decay half-lives of superheavy nuclei with $Z=122-125$

Omar Nagib

备注：: 7 pages,1 figure (4 subfigures). published version
发表信息：: Phys. Rev. C 101, 014610 (2020)
DOI：: 10.1103/PhysRevC.101.014610

摘要：

对于本工作中的$α$衰变半衰期计算，使用了库仑和邻近势模型以及在先前工作[Phys. Rev. C 100，024601（2019）]中开发的扩散参数的新半经验公式。在这项工作中，本模型与广义液滴模型（GLDM），通用衰减定律（UDL），和实验的半衰期在区域$Z=104-118$。其次，用本模型对51个超重核（SHN）与$Z=122-125$的半衰期进行了预测，并与GLDM和UDL的结果进行了比较。本模型显示，更准确地再现实验半衰期相比，GLDM和UDL。此外，它被发现，本模型和UDL的预测是高度一致的，而GLDM很大程度上偏离其他两个。对$α$衰变和自发裂变（SF）之间竞争的研究表明，$α$衰变是主要的衰变模式。在所研究的含$Z=122-125$的SHN中，${}^{295-307}122$和${}^{314-320}125$被确定为潜在候选物，其半衰期相对较长，足以在将来通过其$α$ -衰变链进行实验检测。所确定的候选人与其他最近的工作是一致的。

英文摘要：

For $α$ decay half-life calculations in this work, the Coulomb and proximity potential model with a new semiempirical formula for diffuseness parameter developed in previous work [Phys. Rev. C 100, 024601 (2019)] is used. The present model in this work is compared with the generalized liquid-drop model (GLDM), universal decay law (UDL), and experimental half-lives in the region $Z=104-118$. Next, the predicted half-lives of 51 superheavy nuclei (SHN) with $Z=122-125$ by the present model are compared with those of GLDM, and UDL. The present model is revealed to be more accurate in reproducing experimental half-lives compared to GLDM and UDL. Moreover, it is found that the predictions of the present model and UDL are highly consistent while GLDM largely deviates from the other two. A study of the competition between $α$ decay and spontaneous fission (SF) shows that $α$ decay is the dominant mode. Among the studied SHN with $Z=122-125$, ${}^{295-307}122$ and ${}^{314-320}125$ are identified as potential candidates whose half-lives are relatively long enough to be experimentally detected in the future through their $α$-decay chains. The identified candidates are in good agreement with other recent work.

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