激光金等离子体中Au^(50+)离子E1、M1跃迁的理论研究  

E1 and M1 transitions of Au^(50+) in Au laser plasma

作　　者：徐敏[1,2] 闫安英[1] 蒋刚[2] 

机构地区：[1]西南民族大学电气信息工程学院,成都610041 [2]四川大学原子与分子物理研究所,成都610065

出　　处：《核聚变与等离子体物理》2015年第4期314-319,共6页Nuclear Fusion and Plasma Physics

基　　金：中央高校基本科研业务费专项资金项目(2014NZYQN15)

摘　　要：根据全相对论组态相互作用(RCI)方法和多组态Dirac-Fock(MCDF)方法,考虑量子电动力学(QED)效应和Breit修正,选取重要的电子组态,系统计算了激光金等离子体中类铜Au^(50+)离子nl-n′l′(n=4,l=s,p,d,f;n′=4,5,l′=s,p,d,f)电偶极(E1)跃迁和磁偶极(M1)跃迁的跃迁波长、跃迁几率和振子强度,并得到Au^(50+)离子部分激发态能级结构。计算得到的能级与波长与其他已有的理论和实验结果进行了比较,得到了较为满意的结果。分别采用长度规范和速度规范对电偶极(E1)跃迁参数进行了计算和比较,得到了很好的收敛。计算结果还表明,对于高Z高离化态离子,某些禁戒跃迁占有重要地位。Using the fully relativistic configuration interaction （RCI） method and the multi-configuration Dirac-Fock （MCDF） method and taking quantum electrodynamical （QED） effect and Breit correction into account, wavelengths, transition probabilities and oscillator strengths were calculated for electric dipole （E1） transitions and magnetic dipole （M1） transitions in Au50＋ ion. The obtained energy levels of some excited states and wavelengths of transitions in Au50＋ ion from the method were compared with other theoretical and experimental results, and a good agreement with other results was shown. The calculated transition probabilities and oscillator strengths in E1 transitions using the velocity and length gauges respectively confirmed the accuracy of our calculations. The calculation results indicated that for high-Z highly ionized atom, some forbidden transitions could be very important.

关 键 词：等离子体 类铜Au50+ 电偶极跃迁 磁偶极跃迁 跃迁几率 

分 类 号：O562.1[理学—原子与分子物理]