Isospin effects on pre-equilibrium nucleon emission in heavy-ion collisions

被引：0

作者：

Chen, LW ^{[1
]}

Zhang, XD ^{[1
]}

Ge, LX ^{[1
]}

机构：

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

来源：

HIGH ENERGY PHYSICS & NUCLEAR PHYSICS-ENGLISH EDITION | 1997年 / 21卷 / 01期

关键词：

pre-equilibrium emission; isospin effects; nucleon-nucleon cross sections; symmetry energy;

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-dependent symmetry energy, Coulomb energy, and N-N cross sections are considered in the quantum molecular dynamics model. The influence of isospin effects on the emission of nucleons is discussed in the head-on collisions of the system Ar-40 + Ar-40 at the incident energy of 25 MeV/u. It is observed that the ratio of neutron to proton of pre-equilibrium emission is higher than that of the reaction system, It is found that the symmetry energy enhances the emission of neutron but reduces the emission of proton and that the isospin-dependent N-N cross sections favor the emission of both proton and neutron, but they seem to be more beneficial to the emission of protons.

引用

页码：465 / 470

页数：6

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