Superdeformed band in the N = Z+4 nucleus Ar-40 : A projected shell model analysis

doi:10.1140/epja/i2018-12651-x

	Superdeformed band in the N = Z+4 nucleus Ar-40 : A projected shell model analysis
	Yang, Ying-Chun 1,6; Liu, Yan-Xin 2; Sun, Yang 1,3,4; Guidry, Mike 5
刊名	EUROPEAN PHYSICAL JOURNAL A
	2018-12-17
卷号	54 期号:12 页码:217
ISSN号	1434-6001
DOI	10.1140/epja/i2018-12651-x
英文摘要	.Ar-40 is among the few sd -shell nuclei known to exhibit superdeformation. An interesting question is whether the experimentally identified superdeformed rotational band in Ar-40 has an axially or triaxially deformed shape. Projected shell model calculations assuming an axially deformed basis are performed up to high spins for this nucleus. Our detailed analysis of the wave functions reveals that the high-spin states are dominated by mixed 0-, 2-, and 4-quasiparticle configurations with different K-components. The calculated electric quadrupole transition probabilities reproduce well the known experimental data and suggest a reduced but still significant collectivity in the high spin region. Due to the mixing of various multi-quasiparticle K-configurations, axial asymmetry emerges in the calculation. Throughout the entire rotational band, the extracted triaxial deformation parameters are small but non-zero. Relations of triaxiality and unnatural spin-parity states of the superdeformed side-band are discussed.
资助项目	National Key Program for S&T Research and Development[2016YFA0400501]
WOS关键词	ROTATIONAL BANDS ; DEFORMATION ; COEXISTENCE ; MOMENTS
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000453935600002
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/64471]
专题	中国科学院近代物理研究所
通讯作者	Sun, Yang
作者单位	1.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 2.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China 3.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 5.Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA 6.Shanghai Jiao Tong Univ Press, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ying-Chun,Liu, Yan-Xin,Sun, Yang,et al. Superdeformed band in the N = Z+4 nucleus Ar-40 : A projected shell model analysis[J]. EUROPEAN PHYSICAL JOURNAL A,2018,54(12):217.
APA	Yang, Ying-Chun,Liu, Yan-Xin,Sun, Yang,&Guidry, Mike.(2018).Superdeformed band in the N = Z+4 nucleus Ar-40 : A projected shell model analysis.EUROPEAN PHYSICAL JOURNAL A,54(12),217.
MLA	Yang, Ying-Chun,et al."Superdeformed band in the N = Z+4 nucleus Ar-40 : A projected shell model analysis".EUROPEAN PHYSICAL JOURNAL A 54.12(2018):217.