试验粒子多次通过位垒方法计算熔合速率  

Fusion Rate Calculation by Test Particles Multi-passing Potential Barrier

作　　者：张乔丽[1] 刘玲[1] 孙洪超[1] 

机构地区：[1]沈阳师范大学物理科学与技术学院,辽宁沈阳110034

出　　处：《沈阳师范大学学报（自然科学版）》2009年第2期171-174,共4页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(10547127);沈阳师范大学博士启动基金资助项目(054-554401-01-013)

摘　　要：利用试验粒子多次通过位垒的Langevin模拟方法研究重核熔合的动力学机制,计算了在条件鞍点处的熔合速率,其结果明显低于以往所用首次通过位垒方法计算的值。讨论了重核熔合过程中的非谐势对熔合速率的影响,以及不同温度及接触点对粒子熔合速率的影响。This paper investigates dynamicall mechanism of super heavy nuclei by the method of test particles multi-passing over saddle point and calculates the fusion rate at the condition saddle point. The result is evidently lower than the one calculated by test particles firstly passing over saddle point. In this paper, we also discuss the influence of non-harmonic potential on nuclear fusion rate in the fusion process as well as the effect of temperature and contact point on passing probability.

关 键 词：LANGEVIN方程 熔合速率 多次通过位垒方法 非谐势垒 

分 类 号：O571.43[理学—粒子物理与原子核物理]