Isospin effects on two-nucleon correlation functions in heavy-ion collisions at intermediate energies

被引:56
作者
Chen, LW
Greco, V [1 ]
Ko, CM
Li, BA
机构
[1] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA
[2] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA
[3] Arkansas State Univ, Dept Chem & Phys, State Univ, AR 72467 USA
来源
PHYSICAL REVIEW C | 2003年 / 68卷 / 01期
关键词
D O I
10.1103/PhysRevC.68.014605
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
Using an isospin-dependent transport model, we study isospin effects on two-nucleon correlation functions in heavy-ion collisions induced by neutron-rich nuclei at intermediate energies. We find that these correlation functions are sensitive to the density dependence of nuclear symmetry energy, but not to the incompressibility of symmetric nuclear matter and the medium dependence of nucleon-nucleon cross sections. This sensitivity is mainly due to effects of nuclear symmetry energy on the emission times of neutrons and protons as well as their relative emission sequence. We also study the variations of the symmetry energy effects on nucleon-nucleon correlations with respect to the impact parameter, incident energy, and mass number of heavy-ion collisions.
引用
收藏
页码:146051 / 1460516
页数:16
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