alpha particle preformation and shell effect for heavy and superheavy nuclei

doi:10.1088/1674-1137/42/7/074103

	alpha particle preformation and shell effect for heavy and superheavy nuclei
	Zhao, Yan-Wei 1; Guo, Shu-Qing 1; Zhang, Hong-Fei 1,2,3
刊名	CHINESE PHYSICS C
	2018-06
卷号	42 页码:074103
关键词	alpha particle preformation generalized liquid drop model shell effect magic number
ISSN号	1674-1137
DOI	10.1088/1674-1137/42/7/074103
英文摘要	The alpha particle preformation factor is extracted within a generalized liquid drop model for Z = 84 - 92 isotopes and N = 126, 128, 152, 162, 176, 184 isotones. The calculated results show clearly that the shell effects play a key role in alpha particle preformation. The closer the proton and neutron numbers are to the magic numbers, the more difficult the formation of the alpha cluster inside the mother nucleus is. The preformation factors of the isotopes reflect that N = 126 is a magic number for Po, Rn, Ra, and Th isotopes, but for U isotopes the weakening of the influence of the N = 126 shell closure is evident. The trend of the factors for N = 126 and N = 128 isotones also support this conclusion. We extend the calculations for N = 152, 162, 176, 184 isotones to explore the magic numbers for heavy and superheavy nuclei, which are probably present near Z = 108 to N = 152, 162 isotones and Z = 116 to N = 176, 184 isotones. The results also show that another subshell closure may exist after Z = 124 in the superheavy nuclei. This is useful for future experiments.
资助项目	Fundamental Research Funds for the Central Universities[lzujbky-2017-ot04]
WOS关键词	QUASI-MOLECULAR SHAPES ; LIQUID-DROP MODEL ; DECAY HALF-LIVES ; CLUSTER RADIOACTIVITY ; EMISSION ; TRANSITIONS ; FISSION
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000436109700010
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56854]
专题	中国科学院近代物理研究所
通讯作者	Zhang, Hong-Fei
作者单位	1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ, Joint Dept Nucl Phys, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yan-Wei,Guo, Shu-Qing,Zhang, Hong-Fei. alpha particle preformation and shell effect for heavy and superheavy nuclei[J]. CHINESE PHYSICS C,2018,42:074103.
APA	Zhao, Yan-Wei,Guo, Shu-Qing,&Zhang, Hong-Fei.(2018).alpha particle preformation and shell effect for heavy and superheavy nuclei.CHINESE PHYSICS C,42,074103.
MLA	Zhao, Yan-Wei,et al."alpha particle preformation and shell effect for heavy and superheavy nuclei".CHINESE PHYSICS C 42(2018):074103.