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Nuclear Tetrahedral Shapes from Multidimensionally-Constrained Covariant Density Functional Theories
Jie Zhao a,b , Bing-Nan Lu a,c , En-Guang Zhao a,d and Shan-Gui Zhou a,d,e,f, ∗
2018
会议名称Proceedings of the International Conference ‘Nuclear Theory in the Supercomputing Era — 2016’ (NTSE-2016)
会议录名称Proceedings of the International Conference ‘Nuclear Theory in the Supercomputing Era — 2016’ (NTSE-2016)
期号2016
页码159
会议日期2016.9.19-2016.9.23
会议地点Khabarovsk, Russia
摘要

Many different shape degrees of freedom play crucial roles in determining the nuclear ground state and saddle point properties and the fission path. By breaking both the axial and the spatial reflection symmetries simultaneously, we have developed multidimensionally-constrained covariant density functional theories (MDC-CDFTs) in which all shape degrees of freedom βλμ with even μ, such as β20, β22, β30, β32, β40, etc., are included self-consistently. The MDC-CDFT’s have been applied to the study of fission barriers and potential energy surfaces of actinide nuclei, third minima in potential energy surfaces of light actinides, shapes and potential energy surfaces of superheavy nuclei, the Y32 correlations in N= 150 isotones and Zr isotopes, and shapes of hypernuclei.

In this contribution we introduce MDC-CDFT’s and focus on applications to tetrahedral nuclear shapes. With functionals DD-PC1 and PC-PK1, the ground state shape of 110 Zr is predicted to be tetrahedral so is that of 112 Zr with DD-PC1. The tetrahedral shape originates from large energy gaps around Z= 40 and N= 70 when the β32 distortion is allowed. With the functional DD-PC1, β32>0.03 and the energy gain due to the β32 distortion is larger than 300 keV for the ground states of 248Cf and 250Fm with N= 150.

语种英语
文献类型会议论文
条目标识符http://ir.itp.ac.cn/handle/311006/22761
专题计算平台成果
通讯作者Jie Zhao a,b , Bing-Nan Lu a,c , En-Guang Zhao a,d and Shan-Gui Zhou a,d,e,f, ∗
作者单位1.CAS Key Laboratory of Frontiers in Theoretical Physics, Ins titute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, Chin
2.Physics Department, Faculty of Science, University of Zagre b, Bijenicka 32, Zagreb 10000, Croatia
3.nstitut f ̈ur Kernphysik (IKP-3) and J ̈ulich Center for Had ron Physics, Forschungszentrum J ̈ulich, D-52425 J ̈ulich, German
4.Center of Theoretical Nuclear Physics, National Laborator y of Heavy Ion Accelerator, Lanzhou 730000, China
5.School of Physics, University of Chinese Academy of Science s, Beijing 100049, China
6.Synergetic Innovation Center for Quantum Effects and Applica tion, Hunan Normal University, Changsha, 410081, Chin
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Jie Zhao a,b , Bing-Nan Lu a,c , En-Guang Zhao a,d and Shan-Gui Zhou a,d,e,f, ∗. Nuclear Tetrahedral Shapes from Multidimensionally-Constrained Covariant Density Functional Theories[C],2018:159.
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