Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei

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	Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei
	Ni, DD ; Ren, ZZ
刊名	NUCLEAR PHYSICS A
	2012
卷号	893 期号:-页码:13-26
关键词	ATOMIC MASS EVALUATION CLUSTER RADIOACTIVITY MODEL EMISSION ELEMENTS FORMULA
ISSN号	0375-9474
通讯作者	Ni, DD (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
英文摘要	Combined with the new table of atomic mass evaluation (AME) 2011, the binding energies and alpha-decay energies for heavy and superheavy nuclei are investigated based on the previous studies. First, we use the new data from the AME2011 to check the reliability of the previously proposed formulas. It is found that there is good agreement between the calculated results and new experimental data, showing the good predictive power of the formulas. Then, a new formula with fewer adjustable parameters is presented for binding energies, and it shows better agreement with the available experimental data. However, it is still hard to use it to accurately calculate the alpha-decay energies of superheavy nuclei with N >= 160 and Z >= 106. A new formula of alpha-decay energies is proposed as well, where the shell corrections are better described and the Z = 108 proton shell effect is added. The experimental Q alpha values are reproduced with improved accuracy especially for heavier nuclei. This improvement is of great importance for precise predictions of alpha-decay half-lives for unknown superheavy nuclei. Moreover, the new Q alpha formula and the theoretical FRDM95 and KTUY05 masses are used to determine the Q alpha values of superheavy nuclei with Z = 108-120, and their alpha-decay half-lives are calculated using the generalized density-dependent cluster model (GDDCM). The agreement between theoretical results and known experimental data is discussed, together with the deformed shell effects in the superheavy mass region. (c) 2012 Elsevier B.V. All rights reserved.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [10735010, 10975072, 11035001, 11120101005]; 973 National Major State Basic Research and Development of China [2007CB815004, 2010CB327803]; CAS Knowledge Innovation Project [KJCX2-SW-N02]; Research Fund of Doctoral Point (RFDP) [20100091110028]; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
原文出处	http://dx.doi.org/10.1016/j.nuclphysa.2012.08.006
语种	英语
WOS记录号	WOS:000310091000002
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14991]
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. Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei[J]. NUCLEAR PHYSICS A,2012,893(-):13-26.
APA	Ni, DD,&Ren, ZZ.(2012).Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei.NUCLEAR PHYSICS A,893(-),13-26.
MLA	Ni, DD,et al."Binding energies, alpha-decay energies, and alpha-decay half-lives for heavy and superheavy nuclei".NUCLEAR PHYSICS A 893.-(2012):13-26.