ITP OpenIR  > 理论物理所SCI论文
Multidimensionally constrained relativistic mean-field study of triple-humped barriers in actinides
Zhao, J; Lu, BN; Vretenar, D; Zhao, EG; Zhou, SG; Zhao, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2015
发表期刊PHYSICAL REVIEW C
卷号91期号:1页码:14321
文章类型Article
摘要Background: Potential energy surfaces (PES's) of actinide nuclei are characterized by a two-humped barrier structure. At large deformations beyond the second barrier, the occurrence of a third barrier was predicted by macroscopic-microscopic model calculations in the 1970s, but contradictory results were later reported by a number of studies that used different methods. Purpose: Triple-humped barriers in actinide nuclei are investigated in the framework of covariant density functional theory (CDFT). Methods: Calculations are performed using the multidimensionally constrained relativistic mean field (MDC-RMF) model, with the nonlinear point-coupling functional PC-PK1 and the density-dependent meson exchange functional DD-ME2 in the particle-hole channel. Pairing correlations are treated in the BCS approximation with a separable pairing force of finite range. Results: Two-dimensional PES's of Th-226,Th-228,Th-230,Th-232 and U-232,U-234,U-236,U-238 are mapped and the third minima on these surfaces are located. Then one-dimensional potential energy curves along the fission path are analyzed in detail and the energies of the second barrier, the third minimum, and the third barrier are determined. The functional DD-ME2 predicts the occurrence of a third barrier in all Th nuclei and U-238. The third minima in Th-230,Th-232 are very shallow, whereas those in Th-226,Th-228 and U-238 are quite prominent. With the functional PC-PK1 a third barrier is found only in Th-226,Th-228,Th-230. Single-nucleon levels around the Fermi surface are analyzed in Th-226, and it is found that the formation of the third minimum is mainly due to the Z = 90 proton energy gap at beta(20) approximate to 1.5 and beta(30) approximate to 0.7. Conclusions: The possible occurrence of a third barrier on the PES's of actinide nuclei depends on the effective interaction used in multidimensional CDFT calculations. More pronounced minima are predicted by the DD-ME2 functional, as compared to the functional PC-PK1. The depth of the third well in Th isotopes decreases with increasing neutron number. The origin of the third minimum is due to the proton Z = 90 shell gap at relevant deformations.
学科领域Physics
资助者National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research 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 the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research 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 the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01]
DOIhttp://dx.doi.org/10.1103/PhysRevC.91.014321
关键词[WOS]GROUND-STATE PROPERTIES ; HARTREE-BOGOLIUBOV THEORY ; FISSION-BARRIERS ; FINITE NUCLEI ; ROTATIONAL BANDS ; TH-232 ; PHOTOFISSION ; THRESHOLD ; EXCITATION ; MODEL
收录类别SCI
语种英语
资助者National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research 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 the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research 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 the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01]
WOS类目Physics, Nuclear
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21108
专题理论物理所SCI论文
通讯作者Zhao, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Zhao, J,Lu, BN,Vretenar, D,et al. Multidimensionally constrained relativistic mean-field study of triple-humped barriers in actinides[J]. PHYSICAL REVIEW C,2015,91(1):14321.
APA Zhao, J,Lu, BN,Vretenar, D,Zhao, EG,Zhou, SG,&Zhao, J .(2015).Multidimensionally constrained relativistic mean-field study of triple-humped barriers in actinides.PHYSICAL REVIEW C,91(1),14321.
MLA Zhao, J,et al."Multidimensionally constrained relativistic mean-field study of triple-humped barriers in actinides".PHYSICAL REVIEW C 91.1(2015):14321.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Multidimensionally c(5322KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhao, J]的文章
[Lu, BN]的文章
[Vretenar, D]的文章
百度学术
百度学术中相似的文章
[Zhao, J]的文章
[Lu, BN]的文章
[Vretenar, D]的文章
必应学术
必应学术中相似的文章
[Zhao, J]的文章
[Lu, BN]的文章
[Vretenar, D]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。