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题名: Beyond-mean-field effects on nuclear triaxiality
作者: Ya, T ;  Chen, YS ;  Gao, ZC ;  Liu, L ;  Chen, YJ
刊名: PHYSICAL REVIEW C
出版日期: 2017
卷号: 95, 期号:6, 页码:64316
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.95.064316
通讯作者: Ya, T (reprint author), Shenyang Normal Univ, Sch Phys Sci & Technol, Shenyang 110034, Peoples R China.
文章类型: Article
英文摘要: The beyond-mean-field effects on nuclear triaxiality are studied by applying the projected total energy surface (PTES) calculations to the light tungsten isotopes W170-178, which have been well described as prolate rotors within the mean-field approximation. The present PTES calculations have well reproduced the experimental energies of the yrast states and the available experimental transition quardrupole moment (Q(t)) in function of spin. In particular, the results present a considerable large triaxiality for their ground states, with an average triaxial deformation gamma similar to 15 degrees. For a comparison, the total Routhian surface calculations have also been performed for these nuclei, the results show a well-established axial quadrupole deformation in their ground states. The presence of the significant triaxial deformation can be attributed to the beyond-mean-field effect as the angular momentum projection. This effect is therefore essential for a variety of mean-field approaches since it is only associated with the necessary restoration of the rotational symmetry in the laboratory frame, which is spontaneously broken in the intrinsic frame.
类目[WOS]: Physics, Nuclear
关键词[WOS]: TRANSITION QUADRUPOLE-MOMENTS ;  HIGH-SPIN STATES ;  SIGNATURE INVERSION ;  SHAPE COEXISTENCE ;  ISOTOPES ;  SPECTROSCOPY ;  ENERGIES ;  MASSES ;  ISOMER ;  EVEN
项目资助者: National Nature Science Foundation of China [11301508, 11047171, 11175258, 11575290, 11205246] ;  Chinese Academy of Sciences [KJCX2-SW-N02] ;  Science and Technology Research of Education Ministry of China [209053] ;  National Key Research and Development [2016YFA0400502] ;  National Natural Science Foundation of China ;  China Institute of Engineering Physics [U1430114]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22032
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Ya, T,Chen, YS,Gao, ZC,et al. Beyond-mean-field effects on nuclear triaxiality[J]. PHYSICAL REVIEW C,2017,95(6):64316.
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