Total Routhian surface calculations of triaxial or gamma-soft properties in even-A N=76 isotones with 54 <= Z <= 68

doi:10.1088/1674-1137/39/9/094102

	Total Routhian surface calculations of triaxial or gamma-soft properties in even-A N=76 isotones with 54 <= Z <= 68
	Chai Qing-Zhen 2; Yang Qiong 2; Liu Min-Liang1 ; Wang Hua-Lei 2
刊名	CHINESE PHYSICS C
	2015-09-01
卷号	39 页码:7
关键词	total Routhian surface calculation triaxial deformation gamma-instability rotation alignment
ISSN号	1674-1137
DOI	10.1088/1674-1137/39/9/094102
英文摘要	Total Routhian surface (TRS) calculations for even-even N = 76 isotones with 54 <= Z <= 68 have been performed in three-dimensional (beta(2),gamma,beta(4)) deformation space. Calculated results of the equilibrium deformations are presented and compared with other theoretical predictions and available experimental data. The behavior of collective angular momentum shows the neutron rotation-alignment is preferred in the lighter N =76 isotones, while for the heavier ones the proton alignment is favored. Moreover, multi-pair nucleon alignments and their competition (e.g., in Er-144) are predicted. It is pointed out that these nuclei in the N=76 isotonic chain exhibit triaxiality or gamma softness in high-spin states as well as ground states. Based on deformation-energy curves with respect to axial and non-axial quadrupole deformations, the shape instabilities are evaluated in detail and predicted, particularly in gamma direction. Such instabilities are also supported by the odd- and even-spin level staggering of the observed gamma bands, which is usually used to distinguish between gamma-rigid and gamma-soft asymmetry.
资助项目	National Natural Science Foundation of China[10805040] ; National Natural Science Foundation of China[11175217] ; Foundation and Advanced Technology Research Program of Henan Province[132300410125] ; S & T Research Key Program of Henan Province Education Department[13A140667]
WOS关键词	NUCLEAR GROUND-STATE ; SIGNATURE INVERSION ; BETA-DECAY ; DEFORMATION ; MASSES ; BANDS ; COEXISTENCE ; SYSTEMATICS ; TRANSITION ; ENERGIES
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000361416700007
资助机构	National Natural Science Foundation of China ; Foundation and Advanced Technology Research Program of Henan Province ; S & T Research Key Program of Henan Province Education Department
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40742]
专题	近代物理研究所_实验物理中心
通讯作者	Yang Qiong
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Peoples R China
推荐引用方式 GB/T 7714	Chai Qing-Zhen,Yang Qiong,Liu Min-Liang,et al. Total Routhian surface calculations of triaxial or gamma-soft properties in even-A N=76 isotones with 54 <= Z <= 68[J]. CHINESE PHYSICS C,2015,39:7.
APA	Chai Qing-Zhen,Yang Qiong,Liu Min-Liang,&Wang Hua-Lei.(2015).Total Routhian surface calculations of triaxial or gamma-soft properties in even-A N=76 isotones with 54 <= Z <= 68.CHINESE PHYSICS C,39,7.
MLA	Chai Qing-Zhen,et al."Total Routhian surface calculations of triaxial or gamma-soft properties in even-A N=76 isotones with 54 <= Z <= 68".CHINESE PHYSICS C 39(2015):7.