类锌W^(44+)离子双电子复合速率系数的理论研究

Dielectronic Recombination of Zn-like W^(44+) Ions

利用全相对论组态相互作用理论方法,计算了类锌W44+离子从基态3s23p63d104s2经过双激发态(3s23p63d104s2)-1nln'l('n=4、5;n'=4~15)的双电子复合(DR)速率系数,通过对不同电子激发的DR速率系数的比较,得知4s电子激发的DR速率系数在低温时给出了主要贡献,而3d的贡献在高温时突出;分别分析了不同电子激发的DR速率系数随l'和n'的变化,由此给出了l'的截断值。

Calculations of dielectronic recombination（DR） rate coefficients from the ground state 3s23p63d104s2 of Zn-like W44＋ ions through doubly excited states（3s23p63d104s2）-1nln＇l（＇ n=4、5;n＇=4~15）are performed using the fully relativistic configuration interaction method.Comparison of the rate coefficients from different subshell excitations shows that 4s subshell excitation dominates at low temperature,but 3d subshell excitation dominates at high temperature.The l＇ and n＇ dependences of the rate coefficients from different subshell excitations are investigated.