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题名: Thermal properties of asymmetric nuclear matter with an improved isospin- and momentum-dependent interaction
作者: Xu, J;  Chen, LW;  Li, BA
刊名: PHYSICAL REVIEW C
出版日期: 2015
卷号: 91, 期号:1, 页码:14611
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.91.014611
通讯作者: Xu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
文章类型: Article
英文摘要: Thermal properties of asymmetric nuclear matter, including the temperature dependence of the symmetry energy, single-particle properties, and differential isospin fractionation, are investigated with different neutronproton effective mass splittings by using an improved isospin- and momentum-dependent interaction. In this improved interaction, the momentum dependence of the isoscalar single-particle potential at saturation density is well fit to that extracted from optical-model analyses of proton-nucleus scattering data up to the nucleon kinetic energy of 1 GeV, and the isovector properties, i.e., the slope of the nuclear symmetry energy, the momentum dependence of the symmetry potential, and the symmetry energy at saturation density, can be flexibly adjusted via three parameters: x, y, and z, respectively. Our results indicate that the nucleon phase-space distribution in equilibrium, the temperature dependence of the symmetry energy, and the differential isospin fractionation can be significantly affected by the isospin splitting of the nucleon effective mass.
类目[WOS]: Physics, Nuclear
关键词[WOS]: HEAVY-ION COLLISIONS ;  EFFECTIVE-MASS ;  NEUTRON ;  PROTON ;  CONSTRAINTS ;  SCATTERING ;  EQUATION ;  ENERGY ;  STATE
收录类别: SCI
项目资助者: Major State Basic Research Development Program (973 program) in China [2015CB856904, 2014CB845401, 2013CB834405] ;  National Natural Science Foundation of China [11475243, 11421505, 11275125, 11135011, 11320101004] ;  "100-talent plan" of the Shanghai Institute of Applied Physics under Chinese Academy of Sciences [Y290061011] ;  Shanghai Pujiang Program [13PJ1410600] ;  Shu Guang project - Shanghai Municipal Education Commission ;  Shanghai Education Development Foundation ;  Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning ;  Science and Technology Commission of Shanghai Municipality [11DZ2260700] ;  US National Science Foundation [PHY-1068022] ;  National Aeronautics and Space Administration [NNX11AC41G] ;  CUSTIPEN (China-U.S. Theory Institute for Physics with Exotic Nuclei) under DOE Grant [DE-FG02-13ER42025]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21110
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Recommended Citation:
Xu, J,Chen, LW,Li, BA. Thermal properties of asymmetric nuclear matter with an improved isospin- and momentum-dependent interaction[J]. PHYSICAL REVIEW C,2015,91(1):14611.
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