高离化态金离子的辐射复合及其退激发过程的理论研究

Theoretical study of radiative recombination and the sub-sequent radiative decay processes in highly charged Au ions

利用基于多组态Dirac-Fock方法的程序包GRASP92和RATIP以及最新发展的RERR06程序,详细计算了高离化态金离子(类镍Au51+、类铜Au50+和类锌Au49+)俘获一个自由电子到nl(n=4—8,l=0—3)壳层的辐射复合谱以及相应的辐射退激发谱.理论计算的辐射复合谱很好地重现了实验谱.研究结果表明:对类镍Au51+、类铜Au50+和类锌Au49+而言,将一个自由电子俘获到n=4壳层的概率最大;在辐射复合过程之后,处在n=4壳层的俘获电子的辐射退激发谱线最强,并且体现了整个辐射退激发谱的主要特征.

Using multi-configuration Dirac-Fock method and the corresponding packages GRASP92 and RATIP,as well as the newly developed RERR06,we have calculated the radiative recombination （ RR） spectra for capturing a continuum electron into nl （ n = 4—8,l = 0—3） subshell of Ni-like Au51 ＋ ,Cu-like Au50 ＋ and Zn-like Au49 ＋ ions and their corresponding radiative decay spectra. The calculated RR spectra reproduce the experimental spectra excellently. It was found that for the Ni-like Au51 ＋ ,Cu-like Au50 ＋ and Zn-like Au49 ＋ ions,the probability of capturing a free electron to n = 4 subshell is the largest. Furthermore,the main characteristics of the relative decay spectra is the domination of the lines from the captured electrons radiatively decaying from the n = 4 subshell.