Isospin effects on fragmentation process and role of momentum dependent interaction in heavy ion collisions at intermediate energy

被引：0

作者：

Xing, YZ ^{[1
]}

Liu, JY

Guo, WJ

Zuo, W

Di, YF

Li, XG

Li, ZH

机构：

[1] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[3] Tianshui Normal Univ, Dept Phys, Gansu Tianshui 741000, Peoples R China

[4] Chinese Acad Sci, Lanzhou Branch, Lanzhou 730000, Peoples R China

来源：

HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION | 2003年 / 27卷 / 02期

关键词：

fragmentation; isospin effect; momentum-dependent interaction;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The isospin effects on the fragmentation process and the role of momentum dependent interaction in heavy ion collisions at intermediate energy are studied systematically by using isospin dependent Quantum Molecular Dynamical model (IQMD). The results show that multiplicity of intermediate mass fragments <N-imf>(b) averaged over all impact parameters depends on the isospin effects of in-medium nucleon-nucleon cross section strongly but on the symmetry potential weakly. The momentum dependent interaction enhances the sensitivity of N-imf to the isospin effects of in-medium nucleon-nucleon cross section. Therefore, <N-imf>(b) can be used as a probe to extract the information of in-medium isospin-dependent nucleon-nucleon cross section in heavy ion collisions at intermediate energy.

引用

页码：130 / 134

页数：5

共 20 条

[1] QUANTUM MOLECULAR-DYNAMICS APPROACH TO HEAVY-ION COLLISIONS - DESCRIPTION OF THE MODEL, COMPARISON WITH FRAGMENTATION DATA, AND THE MECHANISM OF FRAGMENT FORMATION [J].

AICHELIN, J ;

PEILERT, G ;

BOHNET, A ;

ROSENHAUER, A ;

STOCKER, H ;

GREINER, W .

PHYSICAL REVIEW C, 1988, 37 (06) :2451-2468

[2]

Bertsch G.F., 1988, PHYS REP, V160, P4

[3] VEGAS - A MONTE CARLO SIMULATION OF INTRANUCLEAR CASCADES [J].

CHEN, K ;

FRAENKEL, Z ;

FRIEDLANDER, G ;

GROVER, JR ;

MILLER, JM ;

SHIMAMOTO, Y .

PHYSICAL REVIEW, 1968, 166 (04) :949-+

[4] NUCLEAR-FLOW EXCITATION-FUNCTION [J].

KLAKOW, D ;

WELKE, G ;

BAUER, W .

PHYSICAL REVIEW C, 1993, 48 (04) :1982-1987

[5] Isospin dependence of collective flow in heavy-ion collisions at intermediate energies [J].

Li, BA ;

Ren, ZZ ;

Ko, CM ;

Yennello, SJ .

PHYSICAL REVIEW LETTERS, 1996, 76 (24) :4492-4495

[6] Neutron-proton differential flow as a probe of isospin-dependence of the nuclear equation of state [J].

Li, BA .

PHYSICAL REVIEW LETTERS, 2000, 85 (20) :4221-4224

[7] Isospin physics in heavy-ion collisions at intermediate energies [J].

Li, BA ;

Ko, CM ;

Bauer, W .

INTERNATIONAL JOURNAL OF MODERN PHYSICS E, 1998, 7 (02) :147-229

[8]

LI BA, 2001, ISOSPIN PHYSICS HEAV

[9] Isospin effect on the process of multifragmentation and dissipation at intermediate energy heavy ion collisions [J].

Liu, JY ;

Yang, YF ;

Zuo, W ;

Wang, SJ ;

Zhao, Q ;

Guo, WJ ;

Chen, B .

PHYSICAL REVIEW C, 2001, 63 (05) :546121-546128

[10] Nuclear stopping as a probe for in-medium nucleon-nucleon cross sections in intermediate energy heavy ion collisions [J].

Liu, JY ;

Guo, WJ ;

Wang, SJ ;

Zuo, W ;

Zhao, Q ;

Yang, YF .

PHYSICAL REVIEW LETTERS, 2001, 86 (06) :975-978

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