ITP OpenIR  > 理论物理所2016年知识产出
Multidimensionally-constrained relativistic mean-field study of spontaneous fission: Coupling between shape and pairing degrees of freedom
Zhao, J; Lu, BN; Niksic, T; Vretenar, D; Zhou, SG; Zhao, J (reprint author), Univ Zagreb, Dept Phys, Fac Sci, Bijenicka Cesta 32, Zagreb 10000, Croatia.
2016
发表期刊PHYSICAL REVIEW C
卷号93期号:4页码:44315
文章类型Article
摘要Background: Studies of fission dynamics, based on nuclear energy density functionals, have shown that the coupling between shape and pairing degrees of freedom has a pronounced effect on the nonperturbative collective inertia and, therefore, on dynamic (least-action) spontaneous fission paths and half-lives. Purpose: The aim is to analyze the effects of particle-number fluctuation degrees of freedom on symmetric and asymmetric spontaneous fission (SF) dynamics, and to compare the findings with the results of recent studies based on the self-consistent Hartree-Fock-Bogoliubov (HFB) method. Methods: Collective potentials and nonperturbative cranking collective inertia tensors are calculated using the multidimensionally-constrained relativistic-mean-field (MDC-RMF) model. Pairing correlations are treated in the BCS approximation using a separable pairing force of finite range. Pairing fluctuations are included as a collective variable using a constraint on particle-number dispersion. Fission paths are determined with the dynamic programming method by minimizing the action in multidimensional collective spaces. Results: The dynamics of spontaneous fission of Fm-264 and Fm-250 are explored. Fission paths, action integrals, and corresponding half-lives computed in the three-dimensional collective space of shape and pairing coordinates, using the relativistic functional DD-PC1 and a separable pairing force of finite range, are compared with results obtained without pairing fluctuations. Results for Fm-264 are also discussed in relation with those recently obtained using the HFB model. Conclusions: The inclusion of pairing correlations in the space of collective coordinates favors axially symmetric shapes along the dynamic path of the fissioning system, amplifies pairing as the path traverses the fission barriers, significantly reduces the action integral, and shortens the corresponding SF half-life.
学科领域Physics
资助者NEWFELPRO project of the Ministry of Science, Croatia ; NEWFELPRO project of the Ministry of Science, Croatia ; Marie Curie FP7-PEOPLE-COFUND program ; Marie Curie FP7-PEOPLE-COFUND program ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; NEWFELPRO project of the Ministry of Science, Croatia ; NEWFELPRO project of the Ministry of Science, Croatia ; Marie Curie FP7-PEOPLE-COFUND program ; Marie Curie FP7-PEOPLE-COFUND program ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; 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.93.044315
关键词[WOS]HARTREE-BOGOLIUBOV THEORY ; NUCLEAR-STRUCTURE ; MASS PARAMETERS ; FINITE NUCLEI ; DYNAMICS ; MODE ; DEFORMATION ; PROBABILITY ; VIBRATIONS ; BARRIERS
收录类别SCI
语种英语
资助者NEWFELPRO project of the Ministry of Science, Croatia ; NEWFELPRO project of the Ministry of Science, Croatia ; Marie Curie FP7-PEOPLE-COFUND program ; Marie Curie FP7-PEOPLE-COFUND program ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01] ; NEWFELPRO project of the Ministry of Science, Croatia ; NEWFELPRO project of the Ministry of Science, Croatia ; Marie Curie FP7-PEOPLE-COFUND program ; Marie Curie FP7-PEOPLE-COFUND program ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; Croatian Science Foundation-project "Structure and Dynamics of Exotic Femtosystems" [IP-2014-09-9159] ; National Key Basic Research Program of China [2013CB834400] ; National Key Basic Research Program of China [2013CB834400] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; National Natural Science Foundation of China [11120101005, 11275248, 11525524] ; 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/311006/21690
专题理论物理所2016年知识产出
通讯作者Zhao, J (reprint author), Univ Zagreb, Dept Phys, Fac Sci, Bijenicka Cesta 32, Zagreb 10000, Croatia.
推荐引用方式
GB/T 7714
Zhao, J,Lu, BN,Niksic, T,et al. Multidimensionally-constrained relativistic mean-field study of spontaneous fission: Coupling between shape and pairing degrees of freedom[J]. PHYSICAL REVIEW C,2016,93(4):44315.
APA Zhao, J,Lu, BN,Niksic, T,Vretenar, D,Zhou, SG,&Zhao, J .(2016).Multidimensionally-constrained relativistic mean-field study of spontaneous fission: Coupling between shape and pairing degrees of freedom.PHYSICAL REVIEW C,93(4),44315.
MLA Zhao, J,et al."Multidimensionally-constrained relativistic mean-field study of spontaneous fission: Coupling between shape and pairing degrees of freedom".PHYSICAL REVIEW C 93.4(2016):44315.
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(1280KB) 开放获取--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
[Niksic, T]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
[Niksic, T]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
[Niksic, T]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。