东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Exploring the sensitivity of a-decay half-life to neutron skin thickness for nuclei around 208Pb

ISSN号：0379-4148
期刊名称：《物理》
时间：0
分类：TL[核科学技术]
作者机构：[1]Department of Physics and Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University,Nanjing 210093, China, [2]Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
相关基金：This work was supported by the National Natural Science Foundationof China (Nos. 11175085, 11235001, 11375086, and 11120101005),the 973 Program of China (No. 2013CB834400), the Project Fundedby the Priority Academic Program Development of Jiangsu HigherEducation Institutions (PAPD), and by the Open Project Program ofthe State Key Laboratory of Theoretical Physics, Institute ofTheoretical Physics, Chinese Academy of Sciences, China (No.Y5KF141CJ1).

作者： Niu Wan[1], Chang Xu[1], Zhong-Zhou Ren[1,2]

关键词： Density, distribution, Neutron, SKIN, thickness, DENSITY-DEPENDENT, cluster, model, a-decay, HALF-LIFE, Density distribution, Neutron skin thickness, Density-dependent cluster model, \(\alpha \), -decay half-life

中文摘要：

Based on the newest experimentally extractednuclear density distributions for double-magic nucleus208Pb (Tarbert et al. in Phys Rev Lett 112:242502, 2014),the sensitivity of a-decay half-life to nuclear skin thicknessis explored in the vicinity of the shell closure region around208Pb, i.e., isotopes of Z ?82 and isotones of N ?126.With the two-parameter Fermi (2PF) density distributionsand an analytically derived formula, the a-decay half-life isfound to be closely related to the magnitude of nuclear skinthickness. For a decays to the Z ?82 isotopes, the a-decayhalf-life is found to decrease with the increasing neutronskin thickness, while the opposite behavior is found for adecays to the N ?126 isotones. Therefore, it could be apossible way to extract the nuclear skin thickness frommeasured a-decay half-lives.

英文摘要：

Based on the newest experimentally extracted nuclear density distributions for double-magic nucleus \(^{208}\text {Pb}\) (Tarbert et al. in Phys Rev Lett 112:242502, 2014), the sensitivity of \(\alpha \)-decay half-life to nuclear skin thickness is explored in the vicinity of the shell closure region around \(^{208}\text {Pb}\), i.e., isotopes of \(Z=82\) and isotones of \(N=126\). With the two-parameter Fermi (2PF) density distributions and an analytically derived formula, the \(\alpha \)-decay half-life is found to be closely related to the magnitude of nuclear skin thickness. For \(\alpha \) decays to the \(Z=82\) isotopes, the \(\alpha \)-decay half-life is found to decrease with the increasing neutron skin thickness, while the opposite behavior is found for \(\alpha \) decays to the \(N=126\) isotones. Therefore, it could be a possible way to extract the nuclear skin thickness from measured \(\alpha \)-decay half-lives.

同期刊论文项目