Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state

doi:10.1016/j.nuclphysa.2005.04.019

	Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state
	Ren, ZZ ; Xu, C
刊名	NUCLEAR PHYSICS A
	2005-09-05
卷号	759 页码:64-78
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2005.04.019
英文摘要	We generalize the formulas of spontaneous fission half-lives of even-even nuclei in their ground state to both the case of odd nuclei and the case of fission isomers [Phys. Rev. C 71 (2005) 014309]. The spontaneous fission half-lives of odd-A nuclei and of odd-odd nuclei in the ground state are calculated by Swiatecki's formula, by its generalized form, and by a new formula where the blocking effect of unpaired nucleon on the half-lives has been taken into account with different mechanisms. By introducing a blocking factor or a generalized seniority in the formulas of the half-lives of even-even nuclei, we can reasonably reproduce the experimental fission half-lives of odd-A nuclei and of odd-odd nuclei with the same parameters used in ground state of even-even nuclei. For spontaneous fission of the isomers in transuranium nuclei the new formula can be simplified into a three-parameter formula and the isomeric half-lives can be well reproduced by the formula. The new formula of the isomeric half-lives is as good as Metag's formula of fission isomers. The half-lives of isomers from these formulas are very accurate and therefore these formulas can give reliable predictions for half-lives of new isomers of neighboring nuclei. (c) 2005 Elsevier B.V. All rights reserved.
WOS关键词	SYSTEMATICS ; ELEMENTS ; DECAY
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000231128400004
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/25025]
专题	中国科学院近代物理研究所
通讯作者	Xu, C
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
推荐引用方式 GB/T 7714	Ren, ZZ,Xu, C. Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state[J]. NUCLEAR PHYSICS A,2005,759:64-78.
APA	Ren, ZZ,&Xu, C.(2005).Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state.NUCLEAR PHYSICS A,759,64-78.
MLA	Ren, ZZ,et al."Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state".NUCLEAR PHYSICS A 759(2005):64-78.