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Correlation between symmetry energy and effective k-mass splitting with an improved isospin- and momentum-dependent interaction

文献类型：期刊论文

作者Su, Jun1; Zhu, Long1; Huang, Ching-Yuan1,2; Xie, Wen-Jie3,4; Zhang, Feng-Shou5,6,7
刊名PHYSICAL REVIEW C
出版日期2016-09-29
卷号94页码:8
ISSN号2469-9985
DOI10.1103/PhysRevC.94.034619
英文摘要The isospin- and momentum-dependent interaction using the isospin-dependent quantum molecular dynamics model is improved. The momentum dependence of the interaction is fitted to the optical potentials extracted with proton-nucleus scattering data, while the isospin dependence is adjusted based on the current constraints on the symmetry energy and its density slope at normal density. The resulting parameters of the interaction are used to calculate the effective masses characterized by the nonlocality of the nuclear potential in the spatial coordinates (the so-called effective k masses). It is found that this parametrization can reproduce the effective k masses calculated by the Dirac-Brueckner-Hartree-Fock model. The current constraints on the total symmetry energy can accommodate a wide-range adjustment of the local symmetry energy and effective k-mass splitting. Four groups of parameters, which provide different density dependences of symmetry energy and effective k-mass splitting, are applied to investigate the isospin diffusion and neutron to proton double ratios in collisions involving Sn-124 and Sn-112 nuclei at 50 and 120 MeV/nucleon. Calculations confirm the sensitivity of symmetry energy to the isospin diffusion, but indicate the synchronous effects of symmetry energy and effective k-mass splitting on the double ratios.
WOS关键词HEAVY-ION COLLISIONS ; NUCLEAR-EQUATION ; MEAN-FIELD ; FRAGMENT FORMATION ; NORMAL DENSITY ; STATE ; SCATTERING ; MATTER ; CONSTRAINTS ; MODEL
资助项目National Natural Science Foundation of China[11405278] ; National Natural Science Foundation of China[11505150] ; National Natural Science Foundation of China[11161130520] ; Fundamental Research Funds for the Central Universities[15lgpy30] ; Natural Science Foundation of Guangdong Province China[2016A030310208] ; Yuncheng University Research Project[YQ-2014014] ; China Postdoctoral Science Foundation[2015M582730]
WOS研究方向Physics
语种英语
WOS记录号WOS:000385965300004
出版者AMER PHYSICAL SOC
资助机构National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Guangdong Province China ; Yuncheng University Research Project ; China Postdoctoral Science Foundation
源URL[http://119.78.100.186/handle/113462/43539]  
专题中国科学院近代物理研究所
通讯作者Su, Jun
作者单位1.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China
2.Northwestern Polytech Univ, Sch Gen Educ, 47671 Westinghouse Dr, Fremont, CA 94539 USA
3.Yuncheng Univ, Dept Phys, Yuncheng 044000, Peoples R China
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
5.Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China
6.Beijing Radiat Ctr, Beijing 100875, Peoples R China
7.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator Lanzhou, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Su, Jun,Zhu, Long,Huang, Ching-Yuan,et al. Correlation between symmetry energy and effective k-mass splitting with an improved isospin- and momentum-dependent interaction[J]. PHYSICAL REVIEW C,2016,94:8.
APA Su, Jun,Zhu, Long,Huang, Ching-Yuan,Xie, Wen-Jie,&Zhang, Feng-Shou.(2016).Correlation between symmetry energy and effective k-mass splitting with an improved isospin- and momentum-dependent interaction.PHYSICAL REVIEW C,94,8.
MLA Su, Jun,et al."Correlation between symmetry energy and effective k-mass splitting with an improved isospin- and momentum-dependent interaction".PHYSICAL REVIEW C 94(2016):8.

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来源：近代物理研究所

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