ITP OpenIR  > SCI期刊论文
Zhao, J1; Niksic, T2; Vretenar, D2; Zhou, SG
Microscopic self-consistent description of induced fission dynamics: Finite-temperature effects
发表期刊PHYSICAL REVIEW C
语种英语
关键词HARTREE-BOGOLIUBOV THEORY ENERGIES BARRIER NUCLEI PU-240
摘要The dynamics of induced fission of Th-226 is investigated in a theoretical framework based on the finite-temperature time-dependent generator coordinate method (TDGCM) in the Gaussian overlap approximation (GOA). The thermodynamical collective potential and inertia tensor at temperatures in the interval T = 0-1.25 MeV are calculated using the self-consistent multidimensionally constrained relativistic mean-field (MDC-RMF) model, based on the energy density functional DD-PC1. Pairing correlations are treated in the BCS approximation with a separable pairing force of finite range. Constrained RMF+BCS calculations are carried out in the collective space of axially symmetric quadrupole and octupole deformations for the asymmetric fissioning nucleus( 226)Th. The collective Hamiltonian is determined by the temperature-dependent free energy surface and perturbative cranking inertia tensor, and the TDGCM+GOA is used to propagate the initial collective state in time. The resulting charge and mass fragment distributions are analyzed as functions of the internal excitation energy. The model can qualitatively reproduce the empirical triple-humped structure of the fission charge and mass distributions already at T = 0, but the precise experimental position of the asymmetric peaks and the symmetric-fission yield can only be accurately reproduced when the potential and inertia tensor of the collective Hamiltonian are determined at finite temperature, in this particular case between T = 0.75 MeV and T = 1 MeV.
2019
ISSN2469-9985
卷号99期号:1页码:14618
学科领域Physics
学科门类Physics, Nuclear
DOI10.1103/PhysRevC.99.014618
收录类别SCIE
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/23503
专题SCI期刊论文
计算平台成果
作者单位1.China Acad Engn Phys, Microsyst & Terahertz Res Ctr, Chengdu 610200, Sichuan, Peoples R China
2.China Acad Engn Phys, Inst Elect Engn, Chengdu 610200, Sichuan, Peoples R China
3.Univ Zagreb, Fac Sci, Phys Dept, Bijenicka Cesta 32, Zagreb 10000, Croatia
4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
6.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Gansu, Peoples R China
7.Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Hunan, Peoples R China
推荐引用方式
GB/T 7714
Zhao, J,Niksic, T,Vretenar, D,et al. Microscopic self-consistent description of induced fission dynamics: Finite-temperature effects[J]. PHYSICAL REVIEW C,2019,99(1):14618.
APA Zhao, J,Niksic, T,Vretenar, D,&Zhou, SG.(2019).Microscopic self-consistent description of induced fission dynamics: Finite-temperature effects.PHYSICAL REVIEW C,99(1),14618.
MLA Zhao, J,et al."Microscopic self-consistent description of induced fission dynamics: Finite-temperature effects".PHYSICAL REVIEW C 99.1(2019):14618.
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
Microscopic self-con(1067KB)期刊论文作者接受稿开放获取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
[Niksic, T]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
[Niksic, T]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
[Niksic, T]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。