Systematic research on alpha-decay rates of spherical and deformed nuclei
文献类型：期刊论文
| 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 |
| 通讯作者 | Ren, ZZ (reprint author), Nanjing Univ, Inst Acoust, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China. |
| 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. |
| 学科主题 | Physics |
| 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 |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/20945]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Ni, DD,Ren, ZZ. Systematic research on alpha-decay rates of spherical and deformed nuclei[J]. ANNALS OF PHYSICS,2015,358(0):108-128. |
| APA | Ni, DD,&Ren, ZZ.(2015).Systematic research on alpha-decay rates of spherical and deformed nuclei.ANNALS OF PHYSICS,358(0),108-128. |
| MLA | Ni, DD,et al."Systematic research on alpha-decay rates of spherical and deformed nuclei".ANNALS OF PHYSICS 358.0(2015):108-128. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。