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alpha-decay half-lives and Q(alpha) values of superheavy nuclei

文献类型：期刊论文

作者Peng, Bangbao3; Dong, Jianmin1,2,5; Zuo, Wei2,4,5; Gu, Jianzhong3; Wang, Yanzhao3
刊名PHYSICAL REVIEW C
出版日期2010-06-15
卷号81期号:6页码:8
ISSN号0556-2813
DOI10.1103/PhysRevC.81.064309
英文摘要The alpha-decay half-lives of recently synthesized superheavy nuclei (SHN) are investigated by employing a unified fission model (UFM) where a new method to calculate the assault frequency of alpha emission is used. The excellent agreement with the experimental data indicates the UFM is a useful tool to investigate these alpha decays. It is found that the alpha-decay half-lives become more and more insensitive to the Q(alpha) values as the atomic number increases on the whole, which is favorable for us to predict the half-lives of SHN. In addition, a formula is proposed to compute the Q(alpha) values for the nuclei with Z >= 92 and N >= 140 with a good accuracy, according to which the long-lived SHN should be neutron rich. Several weeks ago, two isotopes of a new element with atomic number Z = 117 were synthesized and their alpha-decay chains have been observed. The Q(alpha) formula is found to work well for these nuclei, confirming its predictive power. The experimental half-lives are well reproduced by employing the UFM with the experimental Q(alpha) values. This fact that the experimental half-lives are compatible with experimental Q(alpha) values supports the synthesis of a new element 117 and the experimental measurements to a certain extent.
WOS关键词HEAVIEST ELEMENTS ; EMISSION ; RADIOACTIVITY ; STABILITY ; ISLAND ; HEAVY
资助项目National Natural Science Foundation of China[10875151] ; National Natural Science Foundation of China[10575119] ; National Natural Science Foundation of China[10675170] ; National Natural Science Foundation of China[10975190] ; Major State Basic Research Developing Program of China[2007CB815003] ; Major State Basic Research Developing Program of China[2007CB815004] ; Chinese Academy of Sciences[KJCX3-SYW-N2] ; Chinese Academy of Sciences[CXTD-J2005-1]
WOS研究方向Physics
语种英语
WOS记录号WOS:000278769200001
出版者AMER PHYSICAL SOC
资助机构National Natural Science Foundation of China ; Major State Basic Research Developing Program of China ; Chinese Academy of Sciences
公开日期2011-04-20
源URL[http://ir.imp.cas.cn/handle/113462/7877]  
专题近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者Dong, Jianmin
作者单位1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
3.China Inst Atom Energy, Beijing 102413, Peoples R China
4.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China
5.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Bangbao,Dong, Jianmin,Zuo, Wei,et al. alpha-decay half-lives and Q(alpha) values of superheavy nuclei[J]. PHYSICAL REVIEW C,2010,81(6):8.
APA Peng, Bangbao,Dong, Jianmin,Zuo, Wei,Gu, Jianzhong,&Wang, Yanzhao.(2010).alpha-decay half-lives and Q(alpha) values of superheavy nuclei.PHYSICAL REVIEW C,81(6),8.
MLA Peng, Bangbao,et al."alpha-decay half-lives and Q(alpha) values of superheavy nuclei".PHYSICAL REVIEW C 81.6(2010):8.

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来源：近代物理研究所

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