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题名: Systematic research on alpha-decay rates of spherical and deformed nuclei
作者: Ni, DD;  Ren, ZZ
刊名: ANNALS OF PHYSICS
出版日期: 2015
卷号: 358, 期号:0, 页码:108-128
关键词: alpha decay ;  Half-life ;  Fine structure ;  alpha preformation factor ;  Distorted wave approach ;  Coupled-channel approach
学科分类: Physics
DOI: http://dx.doi.org/10.1016/j.aop.2015.03.001
通讯作者: Ren, ZZ (reprint author), Nanjing Univ, Inst Acoust, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
文章类型: Article
英文摘要: alpha decay is of significant interest for the study of nuclear structure and for the synthesis of new superheavy elements. Theoretical approaches in recent alpha-decay studies are reviewed. After a brief review of the systematic laws of alpha-decay half-lives, various, expressions for the decay width are discussed together with the a preformation factor. These expressions are separately derived within the semiclassical approximation, direct method, distorted wave approach, (modified) two-potential approach, and coupled-channel approach. Within the coupled-channel representation, two techniques to deal with the coupling interaction matrix are discussed for precise descriptions of the alpha-decay fine structure. Various alpha-decay calculations within all these different approaches are presented and compared. It is found that both semiclassical and quantum-mechanical calculations well reproduce the experimental alpha-decay half-lives within a mean factor of about two. However, the semiclassical formalism fails in describing the a transitions to high-lying members of one rotational band, while the coupled-channel approach including enough decay channels gives a precise description of the alpha-decay fine structure observed in heavy deformed nuclei. (C) 2015 Elsevier Inc. All rights reserved.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: EVEN-EVEN NUCLEI ;  UNIFIED THEORETICAL FRAMEWORK ;  DEPENDENT CLUSTER MODEL ;  HALF-LIVES ;  SPONTANEOUS FISSION ;  ATOMIC NUCLEUS ;  QUANTUM-THEORY ;  EXOTIC DECAY ;  RADIOACTIVITY ;  STATES
收录类别: SCI
项目资助者: National Natural Science Foundation of China [10735010, 10975072, 11035001, 11120101005, 11375086] ;  973 National Major State Basic Research and Development of China [2013CB834400, 2010CB327803] ;  Priority Academic Programme Development of JiangSu Higher Education Institutions (PAPD) ;  Research Fund of Doctoral Point (RFDP) [20100091110028] ;  Science and Technology Development Fund of Macau [068/2011/A] ;  China Postdoctoral Science Foundation
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20945
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Ni, DD,Ren, ZZ. Systematic research on alpha-decay rates of spherical and deformed nuclei[J]. ANNALS OF PHYSICS,2015,358(0):108-128.
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