Al^(q+)(q=0～12)的电子碰撞电离截面和速率系数  

Cross sections and rate coeffcients of electron impact ionization of Al^(q+) (q=1～12)

作　　者：方泉玉[1] 李萍[1] 刘勇[1] 邹宇[1] 邱玉波[1] 

机构地区：[1]北京应用物理与计算数学研究所,北京100088

出　　处：《强激光与粒子束》2001年第3期325-328,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金!(199740 0 6 );国家 86 3惯性约束聚变主题资助课题

摘　　要：使用扭曲波玻恩交换 ( DWBE)近似计算 Alq+ ( q=0～ 1 2 )的电子碰撞电离截面和速率系数 ,其中电离截面的高能行为由 Bethe系数决定。分析了计算数据随电离度的变化规律 ,并且与可得到的实验的和其他计算的数据进行了比较 。The DWBE method has been used to calculate the cross sections and of electron impact ionization of Al q+ (q =1～12). We have related the scaled cross sections to the Bethe coefficients at high energy regime. The latter can be obtained by integral of cross section of photoionization. These cross sections are then fit to obtain corresponding rate coefficients. According to our calculations, the scaled cross sections vary slowly as the charge state change. Our results are in good agreement with those of experiment and other theoretical calculations.

关 键 词：电子碰撞电离 截面 速率系数 

分 类 号：O561.5[理学—原子与分子物理]