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题名: Improved version of a binding energy formula for heavy and superheavy nuclei with Z >= 90 and N >= 140
作者: Dong TieKuang(董铁矿)1, 3; Ren, Zhongzhou1, 2, 3
刊名: PHYSICAL REVIEW C
出版日期: 2008-06-01
卷号: 77, 期号:6
DOI: 10.1103/PhysRevC.77.064310
文章类型: Article
英文摘要: A local formula of binding energy for heavy and superheavy nuclei has very recently been proposed [Dong and Ren, Phys. Rev. C 72, 064331 (2005)]. In this paper, the limit of the predictive ability of this local formula is investigated. It is found that the neutron-proton correlations should be considered when higher precision is required. On the one hand, we introduce a new term vertical bar N-Z-50 vertical bar/A, and on the other hand we consider the different strengths of proton-proton, neutron-neutron, and neutron-proton pairing correlations. For the first time, the standard deviation root sigma(2) of the binding energies for 117 nuclei with Z >= 90 and N >= 140 is reduced to 0.105 MeV. The alpha decay energies Q(alpha) and half-lives T-alpha of nuclei with Z = 102-118 are reproduced quite well. The proton drip line of superheavy elements from Md (Z = 101) to Ds (Z = 110) are predicted.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Nuclear
研究领域[WOS]: Physics
关键词[WOS]: DECAY HALF-LIVES ; DATA SHEETS ; HEAVIEST NUCLEI ; MASS FORMULA ; ELEMENTS ; DEFORMATIONS ; SYSTEMATICS ; STABILITY
收录类别: SCI
语种: 英语
WOS记录号: WOS:000257290000022
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15884
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Nanjing Univ, Dept Phys, Nanjing 210008, Peoples R China
2.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Peoples R China
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