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题名: Improvement on Fermionic properties and new isotope production in molecular dynamics simulations
作者: Wang, N ;  Wu, T ;  Zeng, J ;  Yang, YX ;  Ou, L
刊名: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
出版日期: 2016
卷号: 43, 期号:6, 页码:65101
关键词: molecular dynamics ;  multifragmentation ;  phase space occupation ;  neutron-rich ;  heavy-ion collision
学科分类: Physics
DOI: http://dx.doi.org/10.1088/0954-3899/43/6/065101
通讯作者: Wang, N (reprint author), Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China. ;  Wang, N (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: By considering momentum transfer in the Fermi constraint procedure, the stability of the initial nuclei and fragments produced in heavy-ion collisions can be further improved in quantum molecular dynamics simulations. The case of a phase-space occupation probability larger than one is effectively reduced with the proposed procedure. Simultaneously, the energy conservation can be better described for both individual nuclei and heavy-ion reactions. With the revised version of the improved quantum molecular dynamics model, the fusion excitation functions of O-16+W-186 and the central collisions of Au+Au at 35 AMeV are re-examined. The fusion cross sections at sub-barrier energies and the charge distribution of fragments are relatively better reproduced due to the reduction of spurious nucleon emission. The charge and isotope distribution of fragments in Xe+Sn, U+U and Zr+Sn at intermediate energies are also predicted. More unmeasured extremely neutron-rich fragments with Z = 16-28 are observed in the central collisions of U-238+U-238 than that of Zr-96+Sn-124, which indicates that multi-fragmentation of U+U may offer a fruitful pathway to new neutron-rich isotopes.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: HEAVY-ION COLLISIONS ;  CLASSICAL SIMULATION ;  FRAGMENT FORMATION ;  NUCLEAR-EQUATION ;  MEV/NUCLEON ;  MODEL ;  MULTIFRAGMENTATION ;  DISTRIBUTIONS ;  EMISSION ;  ISOSPIN
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11275052, 11265004, 11365004, 11365005, 11422548, 11547307] ;  Guangxi Natural Science Foundation [2015GXNSFDA139004] ;  State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF041CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21639
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Wang, N,Wu, T,Zeng, J,et al. Improvement on Fermionic properties and new isotope production in molecular dynamics simulations[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2016,43(6):65101.
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