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Probing equilibration in HICs and symmetry energy by using isospin-related observables
Li, QF; Li, ZX; Li, QF , China Inst Atom Energy, Beijing 102413, Peoples R China.
2002
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN0254-3052
卷号26期号:9页码:926-932
摘要We have studied the equilibration with respect to isospin degree of freedom in four systems Ru-96 + Ru-96, Ru-96 + Zr-96, Zr-96 + Ru-96, Zr-96 + Zr-96 at 100 MeV/u and 400MeV/u with isospin dependent QMD. It is proposed in this paper that the neutron-proton differential rapidity distribution is a sensitive probe to the degree of equilibration with respect to the isospin degree of freedom. By analyzing the average N/Z ratio of emitted nucleons, light charged particles (LCP) and intermediate mass fragments (IMF), it is found that there exists memory effect in multifragmentation process. The average N/Z ratio of IMF reduces largely as beam energy increases from 100MeV/u to 400MeV/u, which may result from the change of the behavior of the isotope distribution of IMF. The isotope distribution of IMF does also show certain memory effect at 100 MeV/u case but not at 400 MeV/u case. We also found the rapidity distribution of differential neutron-proton counting in neutron rich nucleus-nucleus collisions at intermediate energies is sensitive to the isospin dependent pail of nuclear potential. In conclusion, based on these studies we have found it's an effective way to explore whether the final equilibration could be reached in intermediate HICs by constructing a set of isospin (a)symmetry nuclear-nuclear collision systems with same mass and different charge.
部门归属China Inst Atom Energy, Beijing 102413, Peoples R China; Natl Lab Lanzhou Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Heavy-ion Collisions Multifragmentation Dynamics Nuclei Matter
学科领域Physics
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收录类别SCI
WOS记录号WOS:000178047200008
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13445
专题理论物理所SCI论文
通讯作者Li, QF , China Inst Atom Energy, Beijing 102413, Peoples R China.
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Li, QF,Li, ZX,Li, QF , China Inst Atom Energy, Beijing 102413, Peoples R China.. Probing equilibration in HICs and symmetry energy by using isospin-related observables[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2002,26(9):926-932.
APA Li, QF,Li, ZX,&Li, QF , China Inst Atom Energy, Beijing 102413, Peoples R China..(2002).Probing equilibration in HICs and symmetry energy by using isospin-related observables.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,26(9),926-932.
MLA Li, QF,et al."Probing equilibration in HICs and symmetry energy by using isospin-related observables".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 26.9(2002):926-932.
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