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题名: Influence of the time-step on the production of free nucleons and pions from heavy-ion collisions around 1 GeV/nucleon
作者: Zou, LY; Li, M; Guo, CC; Wang, YJ; Li, QF; Liu, L
刊名: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期: 2016
卷号: 59, 期号:12, 页码:-
关键词: UrQMD model ; symmetry energy at supranormal densities ; mean-field potential updates
DOI: 10.1007/s11433-016-0358-y
通讯作者: Wang, YJ ; Li, QF (reprint author), Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China. ; Li, QF (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
文章类型: 期刊论文
英文摘要: By considering different values of the time-step for the potential updates in the ultra-relativistic quantum molecular dynamics (UrQMD) model, we examine its influence on observables, such as the yield and collective flow of nucleons and pions from heavy-ion collisions around 1 GeV/nucleon. It is found that these observables are affected to some extent by the choice of the time-step, and the impact of the time-step on the pion-related observables is more visible than that on the nucleon-related ones. However, its effect on the pi(-)/pi(+) yield ratio and elliptic flow difference between neutrons and protons, which have been taken as sensitive observables for probing the density-dependent nuclear symmetry energy at high densities, is fairly weak.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000387031200005
ISSN号: 1674-7348
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26542
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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