库仑位垒附近熔合反应的研究(英文)  

Nuclear Fusion near Coulomb Barrier

作　　者：冯兆庆[1] 张丰收[1] 李文飞[1] 靳根明[1] 

机构地区：[1]兰州重离子加速器国家实验室原子核理论中心

出　　处：《高能物理与核物理》2005年第1期41-45,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 (10 475 10 0 )资助~~

摘　　要：利用改进的量子分子动力学研究了16 O + 16 O库仑位垒附近的熔合反应 ,用连接函数的方法对体系的表面能做了改进 .利用这种方法避免了非物理的核子发射 ,熔合截面有了明显的增加 ,这是因为体系的表面形变效应可以通过连接函数来体现 ,从而抑制了弹靶在熔合过程中非物理的核子发射 .By using an improved isospin dependent quantum molecular dynamics model, the fusion reaction near coulomb barrier is studied for the 16O + 16O system. The surface energy of the system is improved by a switch function method, which combines the surface energies of projectile and target with the one of compound nucleus in a proper way. The calculated fusion cross section increases obviously by using this method, which turns away the unphysical nucleon emission in the process of projectile and target approaching since the deformation effect of the surface has been embodied by the switch function method.

关 键 词：库仑位垒 熔合反应 核子发射 量子分子动力学 熔合截面 表面能 物理 抑制 研究 增加 

分 类 号：O571[理学—粒子物理与原子核物理] O57[理学—物理]