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题名: Evolution of ground-state quadrupole and octupole stiffnesses in even-even barium isotopes
作者: Wang, HL;  Yang, J;  Liu, ML;  Xu, FR
刊名: PHYSICAL REVIEW C
出版日期: 2015
卷号: 92, 期号:2, 页码:24303
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.92.024303
通讯作者: Wang, HL (reprint author), Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Peoples R China.
文章类型: Article
英文摘要: Quadrupole and octupole stiffnesses in the ground states of even-even Ba112-150 isotopes have been systematically investigated by means of potential-energy-surface calculations. The calculations are carried out in both (beta(2), gamma, beta(4)) and (beta(2), beta(3), beta(4), beta(5)) deformation spaces with the inclusion of triaxial and reflection-asymmetric shape degrees of freedom, respectively. The present results are compared with previous calculations and available experiments. The shape instabilities are evaluated by analyzing the potential energy curves with respect to both the quadrupole and octupole deformations, which is consistent with the previous discussions predicting the gamma softness or triaxiality and octupole instability. In addition, taking the near-drip-line Ba-114 nucleus as an example, we briefly investigate the effects of potential parameters (e.g., the strength of the spin-orbit potential., and the nuclear surface diffuseness a) on the deformation energy curve, showing almost negligible modifications of nuclear shape and stiffness but considerable changes in the depth of the minimum and the height of the fission barrier (which may be very important for the study of heavy and superheavy nuclei).
类目[WOS]: Physics, Nuclear
关键词[WOS]: QUANTUM PHASE-TRANSITIONS ;  INTERACTION CROSS-SECTIONS ;  MEAN-FIELD DESCRIPTION ;  NUCLEAR-MASS FORMULA ;  ATOMIC-NUCLEI ;  STRUCTURAL EVOLUTION ;  REFLECTION ASYMMETRY ;  DEFORMATION ENERGY ;  ROTATING NUCLEI ;  CHARGED DROP
收录类别: SCI
项目资助者: Natural Science Foundation of China [10805040, 11175217] ;  Foundation and Advanced Technology Research Program of Henan Province [132300410125] ;  S&T Research Key Program of Henan Province Education Department [13A140667]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20904
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Wang, HL,Yang, J,Liu, ML,et al. Evolution of ground-state quadrupole and octupole stiffnesses in even-even barium isotopes[J]. PHYSICAL REVIEW C,2015,92(2):24303.
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