ITP OpenIR  > 计算平台成果
Lu, BN; Zhao, J; Zhao, EG; Zhou, SG; Lu, BN (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Multidimensionally-constrained relativistic mean-field models and potential-energy surfaces of actinide nuclei
Source PublicationPHYSICAL REVIEW C
Language英语
Abstract

Background: Many different shape degrees of freedom play crucial roles in determining the nuclear ground state and saddle point properties and the fission path. For the study of nuclear potential energy surfaces, it is desirable to have microscopic and self-consistent models in which all known important shape degrees of freedom are included. Purpose: By breaking both the axial and the spatial reflection symmetries simultaneously, we develop multidimensionally-constrained relativistic mean field (MDC-RMF) models. Methods: The nuclear shape is assumed to be invariant under the reversion of x and y axes, i.e., the intrinsic symmetry group is V-4 and all shape degrees of freedom beta(lambda mu) with even mu, such as beta(20), beta(22), beta(30), beta(32), beta(40), ..., are included self-consistently. The single-particle wave functions are expanded in an axially deformed harmonic oscillator (ADHO) basis. The RMF functional can be one of the following four forms: the meson exchange or point-coupling nucleon interactions combined with the nonlinear or density- dependent couplings. The pairing effects are taken into account with the BCS approach. Results: The one-, two, and three-dimensional potential energy surfaces of Pu-240 are illustrated for numerical checks and for the study of the effect of the triaxiality on the fission barriers. Potential energy curves of even-even actinide nuclei around the first and second fission barriers are studied systematically. Besides the first ones, the second fission barriers in these nuclei are also lowered considerably by the triaxial deformation. This lowering effect is independent of the effective interactions used in the RMF functionals. Further discussions are made about different predictions on the effect of the triaxiality between the macroscopic-microscopic and MDC-RMF models, possible discontinuities on PES's from self-consistent approaches, and the restoration of broken symmetries. Conclusions: MDC-RMF models give a reasonably good description of fission barriers of even-even actinide nuclei. It is important to include both the nonaxial and the reflection asymmetric shapes simultaneously for the study of potential energy surfaces and fission barriers of actinide nuclei and of those in unknown mass regions such as, e.g., superheavy nuclei.

2014
Volume89Issue:1Pages:14323
Cooperation Status国内
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1103/PhysRevC.89.014323
Indexed BySCI
Funding OrganizationMajor State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Major State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; Major State Basic Research Development Program of China [2013CB834400] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; National Natural Science Foundation of China [11121403, 11175252, 11120101005, 11211120152, 11275248] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21258
Collection计算平台成果
Corresponding AuthorLu, BN (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Lu, BN,Zhao, J,Zhao, EG,et al. Multidimensionally-constrained relativistic mean-field models and potential-energy surfaces of actinide nuclei[J]. PHYSICAL REVIEW C,2014,89(1):14323.
APA Lu, BN,Zhao, J,Zhao, EG,Zhou, SG,&Lu, BN .(2014).Multidimensionally-constrained relativistic mean-field models and potential-energy surfaces of actinide nuclei.PHYSICAL REVIEW C,89(1),14323.
MLA Lu, BN,et al."Multidimensionally-constrained relativistic mean-field models and potential-energy surfaces of actinide nuclei".PHYSICAL REVIEW C 89.1(2014):14323.
Files in This Item:
File Name/Size DocType Version Access License
Multidimensionally-c(2568KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lu, BN]'s Articles
[Zhao, J]'s Articles
[Zhao, EG]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lu, BN]'s Articles
[Zhao, J]'s Articles
[Zhao, EG]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lu, BN]'s Articles
[Zhao, J]'s Articles
[Zhao, EG]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.