大入射能量范围内重离子输运过程的动力学性质研究  

Dynamics of Heavy Ion Collisions within a Large Energy Regime

作　　者：李庆峰[1] 李祝霞[2] M.Bleicher H.Stoecker 

机构地区：[1]湖州师范学院理学院,浙江湖州313000 [2]中国原子能科学研究院,北京102413 [3]Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universitat, D-60438 Frankfurt am Main, Germany [4]Institut fur Theoretische Physik, Johann Wolfgang Goethe-Universitfit, D-60438 Frankfurt am Main, Germany [5]GSI Helmholtzzentrum ftir Schwerionenforschung GmbH, D-64291 Darmstadt, Germany

出　　处：《原子核物理评论》2011年第2期142-156,共15页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(10905021,10979023);浙江省自然科学基金资助项目(Y6090210);教育部科学技术研究重点项目(209053);浙江省钱江人才计划资助项目(2010R10102)~~

摘　　要：基于一个改进的微观动力学输运模型——极端相对论量子分子动力学(UrQMD),较为系统地研究了从SIS能区到AGS和SPS能区,再到RHIC能区,入射能量跨5个数量级的重离子核反应及多个人们感兴趣的实验观测量,如粒子产额、集体流、核阻止以及两粒子HBT关联等。研究表明,不论单粒子观测量,还是两粒子关联观测量,都能自洽地由同一个输运模型加以描述。Based on one updated microscopic transport model Ultra-relativistic Quantum Molecular Dynamics（UrQMD） with modifications of both potentials and two-body scattering cross sections,quite a few interesting observables,such as yields,collective flows,the nuclear stopping,and the HBT two-particle interferometry,are systematically investigated for heavy ion collisions within a large beam energy regime of five orders of magnitude（from SIS,AGS,SPS up to RHIC）.It is shown that a consistent explanation can be received from both single-particle and two-particle related observables.

关 键 词：重离子核反应 UrQMD模型 状态方程 截面的介质修正 

分 类 号：O571.6[理学—粒子物理与原子核物理]