中速C^(3+)与Ne原子靶相互作用过程中单电子转移绝对截面的测量  

Measurement of single-electron transfer cross sections in collision of C^(3+) with neon at intermediate velocity

作　　者：刘会平[1] 陈熙萌[1] 刘兆远[1] 高志民[1] 刘玉文[1] 杜娟[1] 张红强[1] 孙光智[1] 王俊[1] 席发元[1] 王媛[1] 

机构地区：[1]兰州大学核科学与技术学院,兰州730000

出　　处：《物理学报》2008年第8期4846-4850,共5页Acta Physica Sinica

基　　金：国家重大基础研究专项基金(批准号:2002CCA00900)资助的课题~~

摘　　要：实验测量了2.2v0—4.2v0(v0为玻尔速度,v0=2.19×108cm/s)的C3+与Ne原子碰撞过程中单电子转移绝对截面.将实验结果与多体经典轨道蒙特卡罗模拟计算结果进行了比较.用电离能的变化、屏蔽效应、动态关联对实验和理论计算结果间的数值差异做了分析.总体上,实验结果与多体经典轨道蒙特卡罗方法计算结果在趋势上相符很好.此外,还简单分析了多电子原子的转移多电离机制.Absolute cross sections for single-electron transfer of neon induced by C3＋ at intermediate velocity（2.2v0—4.2v0） were measured and calculated using n-body classical trajectory Monte Carlo（nCTMC） method.Good overall agreement between experimental and nCTMC results is found.Screening effect,changes of the ionization potential and the effective charge are taken into account in interpreting the qualitative differences between theoretical and experimental results.In addition,the mechanism of transfer ionization is discussed briefly.

关 键 词：离子-原子碰撞 单电子转移 绝对截面 

分 类 号：O562.5[理学—原子与分子物理]