Isospin dependence of projectile fragmentation and neutron-skin thickness of neutron-rich nuclei  

作　　者：马春旺 王闪闪 

机构地区：[1]Department of Physics,Henan Normal University

出　　处：《Chinese Physics C》2011年第11期1017-1021,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10905017);Program for Innovative Research Team (in Science and Technology) in University of Henan Province (2010IRTSTHN002),China

摘　　要：By investigating the cross section distributions of fragments produced in the 140 A MeV 40,48Ca＋9Be and 1 A GeV 124,136Xe＋Pb reactions, the isospin dependence of projectile fragmentation in fragment production is studied. In the framework of the statistical abrasion-ablation model, the 1 A GeV 136Xe＋ 208Pb reaction is calculated. By adjusting the diffuseness parameter in neutron density distribution of 136Xe, we find the isospin dependence of projectile fragmentation in fragment production is sensitive to the neutron-skin thickness of the projectile nucleus.By investigating the cross section distributions of fragments produced in the 140 A MeV 40,48Ca＋9Be and 1 A GeV 124,136Xe＋Pb reactions, the isospin dependence of projectile fragmentation in fragment production is studied. In the framework of the statistical abrasion-ablation model, the 1 A GeV 136Xe＋ 208Pb reaction is calculated. By adjusting the diffuseness parameter in neutron density distribution of 136Xe, we find the isospin dependence of projectile fragmentation in fragment production is sensitive to the neutron-skin thickness of the projectile nucleus.

关 键 词：heavy-ion collisions isospin effect projectile fragmentation 

分 类 号：O562.6[理学—原子与分子物理]