Shape-coexisting rotation in neutron-deficient Hg and Pb nuclei

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	Shape-coexisting rotation in neutron-deficient Hg and Pb nuclei
	Jiao, CF; Shi, Y; Liu, HL; Xu, FR; Walker, PM
刊名	PHYSICAL REVIEW C
	2015
卷号	91 期号:3 页码:34309
通讯作者	Jiao, CF (reprint author), Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
英文摘要	For a shape-soft nucleus, the deformation change with increasing angular momentum of rotation can be significant. Total-Routhian-surface (TRS) calculations include the shape changes, but angular momentum is not conserved (neither is it a good quantum number, nor is it kept unchanged in the whole TRS mesh). In the projected shell model (PSM), the angular momentum appears as a good quantum number, but calculations have usually been performed with fixed deformation. In the present work, by performing angular-momentum projection on the mean-field potential-energy surface (PES), we can obtain an angular-momentum-conserved PES which gives deformation for a rotational state at a given spin. In order to investigate the shape-changing effect, we have chosen neutron-deficient Hg and Pb isotopes in which shape coexistence occurs. We interpret the irregular rotational behavior of the oblate bands at low spin as arising from deformation changes which are induced by collective rotation. At higher spin, the oblate rotational spectrum can also be influenced by the crossing between the K = 0 ground-state band and a low-K two-quasineutron band. Calculated g factors for the states of oblate bands are given for future experimental testing, and the intrinsic structures of high-K oblate states are investigated.
学科主题	Physics
类目[WOS]	Physics, Nuclear
关键词[WOS]	ATOMIC-NUCLEI ; MEAN-FIELD ; EVEN-EVEN ; STATES ; ISOTOPES ; BAND ; DEFORMATIONS ; ISOMER ; REGION ; PB-186
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21061]
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	Jiao, CF,Shi, Y,Liu, HL,et al. Shape-coexisting rotation in neutron-deficient Hg and Pb nuclei[J]. PHYSICAL REVIEW C,2015,91(3):34309.
APA	Jiao, CF,Shi, Y,Liu, HL,Xu, FR,&Walker, PM.(2015).Shape-coexisting rotation in neutron-deficient Hg and Pb nuclei.PHYSICAL REVIEW C,91(3),34309.
MLA	Jiao, CF,et al."Shape-coexisting rotation in neutron-deficient Hg and Pb nuclei".PHYSICAL REVIEW C 91.3(2015):34309.