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Effects of retarded electrical fields on observables sensitive to the high-density behavior of the nuclear symmetry energy in heavy-ion collisions at intermediate energies

文献类型：期刊论文

作者Yong, Gao-Chan3; Li, Bao-An2; Liu, Xu-Yang6; Cao, Xin-Wei1; Ou, Li4,5; Wei, Gao-Feng1
刊名PHYSICAL REVIEW C
出版日期2018-03-26
卷号97期号:3页码:034620
ISSN号2469-9985
DOI10.1103/PhysRevC.97.034620
英文摘要Within the isospin- and momentum-dependent transport model IBUU11, we examine the relativistic retardation effects of electrical fields on the pi(-)/pi(+) ratio and neutron-proton differential transverse flow in heavy-ion collisions at intermediate energies. Compared to the static Coulomb fields, the retarded electric fields of fast-moving charges are known to be anisotropic and the associated relativistic corrections can be significant. They are found to increase the number of energetic protons in the participant region at the maximum compression by as much as 25% but that of energetic neutrons by less than 10% in Au-197+Au-197 reactions at a beam energy of 400 MeV/nucleon. Consequently, more pi(+) and relatively fewer pi(-) mesons are produced, leading to an appreciable reduction of the pi(-)/pi(+) ratio compared to calculations with the static Coulomb fields. Also, the neutron-proton differential transverse flow, as another sensitive probe of high-density symmetry energy, is also decreased appreciably due to the stronger retarded electrical fields in directions perpendicular to the velocities of fast-moving charges compared to calculations using the isotropic static electrical fields. Moreover, the retardation effects on these observables are found to be approximately independent of the reaction impact parameter.
WOS关键词NEUTRON-RICH NUCLEI ; PION-PRODUCTION ; DEPENDENCE ; MATTER ; ASYMMETRY ; IMPACT ; RATIO ; MODEL
资助项目National Natural Science Foundation of China[11405128] ; National Natural Science Foundation of China[11375239] ; National Natural Science Foundation of China[11365004] ; National Natural Science Foundation of China[11775275] ; National Natural Science Foundation of China[11320101004] ; Foundation of Guangxi innovative team and distinguished scholar in institutions of higher education ; Natural Science Foundation of Guangxi province[2016GXNSFFA380001] ; U.S. Department of Energy, Office of Science[DE-SC0013702] ; U.S. Department of Energy[DE-SC0009971]
WOS研究方向Physics
语种英语
WOS记录号WOS:000428240500004
出版者AMER PHYSICAL SOC
资助机构National Natural Science Foundation of China ; Foundation of Guangxi innovative team and distinguished scholar in institutions of higher education ; Natural Science Foundation of Guangxi province ; U.S. Department of Energy, Office of Science ; U.S. Department of Energy
源URL[http://119.78.100.186/handle/113462/46449]  
专题近代物理研究所_理论物理研究室
作者单位1.Xian Univ Arts & Sci, Sch Mech & Mat Engn, Xian 710065, Shaanxi, Peoples R China
2.Texas A&M Univ Commerce, Dept Phys & Astron, Commerce, TX 75429 USA
3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
4.Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Peoples R China
5.Guangxi Normal Univ, Guangxi Key Lab Breeding Base Nucl Phys & Technol, Guilin 541004, Peoples R China
6.Bohai Univ, Sch Math & Phys, Jinzhou 121013, Peoples R China
推荐引用方式
GB/T 7714		 Yong, Gao-Chan,Li, Bao-An,Liu, Xu-Yang,et al. Effects of retarded electrical fields on observables sensitive to the high-density behavior of the nuclear symmetry energy in heavy-ion collisions at intermediate energies[J]. PHYSICAL REVIEW C,2018,97(3):034620.
APA Yong, Gao-Chan,Li, Bao-An,Liu, Xu-Yang,Cao, Xin-Wei,Ou, Li,&Wei, Gao-Feng.(2018).Effects of retarded electrical fields on observables sensitive to the high-density behavior of the nuclear symmetry energy in heavy-ion collisions at intermediate energies.PHYSICAL REVIEW C,97(3),034620.
MLA Yong, Gao-Chan,et al."Effects of retarded electrical fields on observables sensitive to the high-density behavior of the nuclear symmetry energy in heavy-ion collisions at intermediate energies".PHYSICAL REVIEW C 97.3(2018):034620.

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来源：近代物理研究所

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