Collision Dynamics and Multifragmentation Process in Heavy Ion Collisions

• 作者: Liu, Jianye Zhang, Shaoguang
• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: COLLISION NUMBER MULTIFRAGMENTATION TRANSVERSE MOMENTUM
• 年，卷（期）: 1994,（2）
• 页码范围: 112-119
• 页数: 8页
• 分类号: O4

摘要

【正】 -By using the improved quantum molecular dynamics(IQMD),we have stu-died the influences of items such as the nucleon-nucleon(N-N)collision cross sectionwith or without the medium effect,the momentum dependent interactions(MDI),theequation of state(EOS)and the aggregating method for fragments on the multifrag-mentation process of heavy ion collisions with different beam energies.It is found thatmultifragmentation distribution patterns,the collective flows of fragments and singleparticles,the collision number,and the nuclear matter density all depend strongly on theN-N cross section,the momentum dependent interactions and the nuclear equation ofstate;especially,these dependences are associated with beam energies.However,thefragment multiplicity distribution patterns depend very weakly on the equation of state.