Isospin Effect of Multifragmentation and Critical Phenomena in Finite Nuclei  

作　　者：Feng Zhaoqing Zhang Fengshou Huang Xi Jin Genming 

机构地区：[1]Beljing Normal University, Beljing. [2]不详

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23-23,共1页IMP & HIRFL Annual Report

摘　　要：Isospin effect of multifragmentation for the finite nuclei 112Sn and 132Sn is studied by using a phenomeno-logical asymmetric nuclear equation of state and an isospin dependent quantum molecular dynamics (IQMD) model. The initial distribution of nucleons in phase space is randomly sampled by using temperature dependent Hartree-Fock method in coordinate and momentum space respectively, and dynamical evolution of nucleons is described by IQMD. Various initial density contribution for the intermediate mass fragment (IMF) production is analyzed at a certain temperature. It is found that the isospin effect gradually vanishes with the temperature increasing as shown in Fig.1.Isospin effect of multifragmentation for the finite nuclei n2sn and 132Sn is studied by using a phenomeno- logical asymmetric nuclear equation of state and an isospin dependent quantum molecular dynamics （IQMD） model. The initial distribution of nucleons in phase space is randomly sampled by using temperature dependent Hartree-Fock method in coordinate and momentum space respectively, and dynamical evolution of nucleons is described by IQMD.

关 键 词：同位旋效应 多重碎裂 有限核 临界现象 量子分子动力学 IQMD 同位旋相关 动力学演化 

分 类 号：O571.6[理学—粒子物理与原子核物理] O571.4[理学—物理]