Dynamic Potential Barrier in Entrance Phase of Heavy-Ion Fusion Reactions  

作　　者：TIAN Jun-long,WU Xi-zhen,LI Zhu-xia 

出　　处：《Annual Report of China Institute of Atomic Energy》2009年第1期149-149,共1页中国原子能科学研究院年报（英文版）

摘　　要：Based on the improved quantum molecular dynamics (ImQMD) model,the incident energy dependence of dynamic potential barriers is investigated in the entrance channel of fusion reactions.Based on the improved quantum molecular dynamics （ImQMD） model, the incident energy dependence of dynamic potential barriers is investigated in the entrance channel of fusion reactions. The height of the dynamic barrier increases with the incident energy at energies around the Coulomb barrier. The calculated lowest dynamic barrier approaches to the adiabatic barrier, while the highest one goes up to the sudden potential barrier. To tmderstand the energy dependence of the dynamical barrier we study the neck formation and shape evolution of the system which causes the dynamic lowering of the barrier.

关 键 词：重离子熔合反应 势垒 量子分子动力学 高考 入射能量 反应通道 形状演化 屏障 

分 类 号：O571.6[理学—粒子物理与原子核物理] O413.1[理学—物理]