类镍等电子系列离子M1,M2,E2禁戒跃迁特性的理论研究

Theoretical study of forbidden M1,M2,E2 transitions for highly charged Ni-like ions

利用基于全相对论框架下的多组态Dirac-Fock理论方法发展起来的程序包GRASP92和新发展的处理辐射跃迁过程的程序REOS99,计算了类镍等电子系列离子(Z=45—95)的基组态3s23p63d101S0以及低激发组态3s23p63d94l,3s23p53d104l和3s3p63d104l(l=s,p,d,f)的能级及其向基态的M1,M2,E2禁戒跃迁概率.通过分析高离化类镍离子在特定的原子序数范围内由于存在能级交叉而产生的强组态相互作用,解释了高离化类镍离子禁戒跃迁概率的反常变化现象,探讨了禁戒跃迁概率受强组态相互作用影响而变化的一般规律.

In this paper, the energy structure and the forbidden M1, M2, E2 transition probabilities between the ground state 3s^23p^63d^101 S0 and the low-lying excited 3s^23p^63d^94l, 3s^23p^53d^104l and 3s3p^63d^104l （ l = s, p, d, f） states have been calculated for Ni-like ions of Z = 45-95, by using GRASP92 package and REOS99 code based on the relativistic multi-configuration Dirac-Fock method. By Analyzing the effects of strong configuration interaction （CI） existing in Ni-like sequence, the abnormalies of forbidden transition probabilities existing in several highly charged Ni-like ions are explained, and some general laws for the influence of CI on forbidden transition probabilities are discussed.