摘要
利用扭曲波Born交换近似方法 ,系统地计算了Ar的类氢到类钠离子的电子碰撞电离截面和速率系数 .同时使用精度高的拟合公式对直接电离截面、激发截面、总激发自电离截面和速率系数进行了拟合 。
A distorted-wave Born exchange (DWBE) approximation includ in g relativistic correction is used to calculate the electron-impact ionization cross sections and rate coefficients for the highly charged argon ions: Ar 7+ , Ar 8+ , ... , Ar 17+ . The comparison of the calculated results wit h the experimental data and other theoretical calculations shows that the DWBE method is valid for these ions. The calculated results for direct ionization cro ss sections and excitation autoionization are fitted by empirical formulas to me et the requirements of applications. A set of improved empirical formulas are ab tained for the fast and accurate calculations of rate coefficients from the fit parameters of cross sections.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2002年第z1期55-58,共4页
Nuclear Physics Review
基金
国家自然科学基金资助项目 ( 10 10 4 0 0 5)
中国原子分子联合体
国家 86 3高技术惯性约束聚变主题资助项目~~
关键词
高电荷态离子
碰撞电离截面
扭曲波近似
拟合公式
highly charged ion
ionization cross section
distorted wa ve approximation
fit formula