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	Effect of Coulomb interaction on the isospin fractionation process
	Liu, JY; Xing, YZ; Guo, WJ
刊名	CHINESE PHYSICS LETTERS
	2004-08-01
卷号	21页码:1495-1497
ISSN号	0256-307X
英文摘要	We studied the effect of Coulomb interaction on the isospin fractionation in the intermediate energy heavy ion collisions by using the isospin-dependent quantum molecular dynamics model. The calculated results show that Coulomb interaction induces the reduction of the isospin fractionation process with the evolutions of neutron-proton ratio and mass of system. Because Coulomb interaction is repulsive for the proton, more binding protons become free, which produces the neutron-poor gas phase and neutron-rich liquid phase, compared to the neutron-proton ratio of the system. The isospin fractionation degree is weakened by the Coulomb term. In contrast, the symmetry potential is repulsive for neutrons and attractive for protons in the neutron-rich system, and then the binding neutrons more than the protons become free, which produces a neutron-rich gas phase and neutron-poor liquid phase, so that the isospin fractionation degree is increased. The competition between the effects from the Coulomb interaction and the symmetry potential induces the reduction of the isospin fractionation degree for all the system masses. The properties for the sensitive dependence of isospin fractionation degree on the symmetry potential and weak dependence on the nucleon-nucleon cross section are preserved for all the neutron-rich systems.
WOS关键词	HEAVY-ION COLLISIONS ; ENTRANCE CHANNEL DEPENDENCE ; NUCLEON CROSS-SECTION ; MEAN-FIELD ; EMISSIONS ; FRAGMENTATION ; PROBE
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000223162500022
公开日期	2010-10-29
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/1871]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者	Guo, WJ
作者单位	1.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China 2.Tianshui Normal Coll, Inst Theory Modern Phys, Tianshui 741000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, JY,Xing, YZ,Guo, WJ. Effect of Coulomb interaction on the isospin fractionation process[J]. CHINESE PHYSICS LETTERS,2004,21:1495-1497.
APA	Liu, JY,Xing, YZ,&Guo, WJ.(2004).Effect of Coulomb interaction on the isospin fractionation process.CHINESE PHYSICS LETTERS,21,1495-1497.
MLA	Liu, JY,et al."Effect of Coulomb interaction on the isospin fractionation process".CHINESE PHYSICS LETTERS 21(2004):1495-1497.

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