On ring and bubble formations in heavy ion collisions  

作　　者：CHEREVKO Kostyantyn SU Jun BULAVIN Leonid SYSOEV Volodymyr ZHANG FengShou 

机构地区：[1]College of Nuclear Science and Technology,Beijing Normal University [2]Beijing Radiation Center [3]Physics Department,Taras Shevchenko National University of Kyiv,4Glushkova av. [4]Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou

出　　处：《Nuclear Science and Techniques》2013年第5期76-81,共6页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(NSFC) projects (Nos.11025524 and 11161130520);National Basic Research Program of China(2010CB832903);Ministry of Education,Science Youth and Sports of Ukraine project(No.M/175-2012)

摘　　要：The work is devoted to the implementation of the hydrodynamic laws to the head-on heavy ion collisions within the energy range 50-100 MeV/A.The hydrodynamic mechanisms of the bubble and ring structures formation are investigated.It is shown that there is a possible hydrodynamic explanation of the different structures being formed in the case of soft(K=200 MeV) and stiff(K=400 MeV) equations of state.Within the suggested approach the final geometry of the system is defined in the initial stage of the collision and is very dependent on the sound velocity in the nuclear matter.The obtained results are in a good correspondence with the Boltzmann-like transport theory calculations and the experimental data for the selected energy range.The work is devoted to the implementation of the hydrodynamic laws to the head-on heavy ion collisions within the energy range 50-100 MeV/A. The hydrodynamic mechanisms of the bubble and ring structures formation are investigated. It is shown that there is a possible hydrodynamic explanation of the different structures being formed in the case of soft （K=200 MeV） and stiff （K=400 MeV） equations of state. Within the suggested approach the final geometry of the system is defined in the initial stage of the collision and is very dependent on the sound velocity in the nuclear matter. The obtained results are in a good correspondence with the Boltzmann-like transport theory calculations and the experimental data for the selected energy range.

关 键 词：重离子碰撞 泡沫形成 环和 流体力学 能量范围 动力学机制 动力学解释 法律实施 

分 类 号：O571.6[理学—粒子物理与原子核物理] TS262.5[理学—物理]