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题名: Effects of electron screening on alpha-decay half-lives in different external environments
作者: Wan, N;  Xu, C;  Ren, ZZ
刊名: PHYSICAL REVIEW C
出版日期: 2015
卷号: 92, 期号:2, 页码:24301
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.92.024301
通讯作者: Wan, N (reprint author), Nanjing Univ, Inst Acoust, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
文章类型: Article
英文摘要: In this paper, the electron screening effects on alpha-decay half-lives are investigated in different external environments, including a decays in neutral atoms, in metal, and in extremely strong magnetic-field environments. Systematic calculations of alpha-decay half-lives are performed for alpha emitters with proton number Z = 52-105. By taking into account the electron screening effects, the interaction potential between alpha particle and daughter nucleus, and the decay energy are both changed in external environments. From the numerical results, it is found that the alpha-decay half-lives in external environments are changed by a factor of from 5 x 10(-4)% to 11.46% due to the electron screening effects. Moreover, we find that the electron screening effect is closely related to the decay energy of the bare nucleus and its proton number. To measure the electron screening effects in experiments, it is suggested to select the alpha-decay candidates with relatively low decay energies and proper decay half-lives.
类目[WOS]: Physics, Nuclear
关键词[WOS]: STRONG MAGNETIC-FIELD ;  THOMAS-FERMI ;  STATISTICAL-MODEL ;  SHELL-MODEL ;  ATOMS ;  SCATTERING ;  POTENTIALS ;  STATE ;  WIDTH ;  IONS
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11175085, 11235001, 11375086, 11120101005] ;  973 Program of China [2013CB834400] ;  Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ;  Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y5KF141CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20903
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Wan, N,Xu, C,Ren, ZZ. Effects of electron screening on alpha-decay half-lives in different external environments[J]. PHYSICAL REVIEW C,2015,92(2):24301.
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