Special Roles of Proton-halo Nucleus Structure on Fragmentation in Heavy Ion Collisions  

作　　者：Guo Wenjun, Liu Jianye and Xing Yongzhong 

出　　处：《近代物理研究所和兰州重离子加速器实验室年报：英文版》2004年第1期14-14,共1页IMP & HIRFL Annual Report

摘　　要：We studied the special roles of proton-halo structure of 23Al on the fragmentation by using isospin dependent quantum molecular dynamics. In order to protrude the special roles of proton-halo structure on the reaction dynamics we compared the fragmentation multiplicity induced by proton-halo nucleus 23Al with those induced by a same mass stable nucleus 23Na. Fig.1 shows the fragmentation multiplicity FZ at freeze out time for the reactions 23Al +48Ca and 23Na +48Ca at impact parameter 6-1.0 fm as a function of beam energy. The mea-We studied the special roles of proton-halo structure of 23Al on the fragmentation by using isospin dependent quantum molecular dynamics. In order to protrude the special roles of proton-halo structure on the reaction dynamics we compared the fragmentation multiplicity induced by proton-halo nucleus 23Al with those induced by a same mass stable nucleus 23Na. Fig.1 shows the fragmentation multiplicity FZ at freeze out time for the reactions 23Al ＋4sca and 23Na ＋48Ca at impact parameter b=1.0 fm as a function of beam energy.

关 键 词：质子晕核 重离子碰撞 晕核结构 量子分子动力学 反应动力学 破碎 23Al 同位旋相关 

分 类 号：O571.5[理学—粒子物理与原子核物理]