慢电子与氧原子之间相互作用——光分解和散射的研究  

Research on Interaction of Photodetachment and Scattering Between Atomic Oxygen and Low Energy Electron

作　　者：吴建华[1] 袁建民[1] 

机构地区：[1]湖南长沙国防科技大学应用物理系,湖南长沙410073

出　　处：《计算物理》2004年第4期299-304,共6页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(19974075);国家杰出青年科学基金(10025416);国家高科技惯性约束聚变委员会及中国原子分子数据研究联合体资助项目

摘　　要：　利用R-矩阵方法进行了慢电子与氧原子之间相互作用的密耦计算.给出了光子能量从阈值到7eV范围内的氧负离子的光分解总截面,各个对称性分截面以及主要电离通道对分截面的贡献.并和已知的实验结果和理论计算结果进行了对比.同时计算了慢电子与氧原子弹性碰撞散射截面,并与试验结果和理论结果进行了分析比较.Close-coupling calculations for the interaction between low-energy electron and atomic oxygen are carried out by using R-matrix method. Total photodetachment cross sections of negative atomic oxygen ion together with main contribution of the individual ionization channels to the partial cross sections are illustrated at the photon energy ranging from the threshold to 7 eV. Comparison is made between the present results and the former experimental and theoretical results. Elastic cross sections of low-energy electron scattering from the atomic oxygen are also given to compare with other experimental and theoretical results.

关 键 词：慢电子 氧原子 光分解 散射截面 光子能量 

分 类 号：O56[理学—原子与分子物理]