高离化态Hg和U离子的双电子复合过程的理论研究  

Theoretical study on the dielectronic recombination of highly charged mercury and uranium ions

作　　者：师应龙[1] 董晨钟[1] 张登红[1] 符彦飙[1] 

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070

出　　处：《物理学报》2008年第1期88-95,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10434100,10774122);兰州重离子加速器国家实验室原子核理论中心基金;西北师范大学科技创新工程项目(批准号:NWNU-KJCXGC-03-21)资助的课题~~

摘　　要：在相对论多组态Dirac-Fock理论基础上,利用近期发展的计算双电子复合截面的程序,系统研究了高离化态类氦到类硼Hg和U离子的KLL双电子复合过程.讨论了Breit效应和量子电动力学(QED)效应对Hg离子共振双激发态能级的贡献,得到了双激发态的共振能、总线宽和相应的双电子复合共振强度,所得结果与其他理论和实验结果都符合得很好.在此基础上进一步研究了高离化态U离子的KLL双电子复合过程,并与已有的实验和理论结果作了比较.Based on the multiconfiguration Dirac-Fock method, with the recently developed program for the calculation of cross section of dielectronic recombination （DR） , the KLL DR process of highly charged mercury and uranium ions from helium-like to boron-like have been systematically studied. For Hg ions, the contributions to the level of doubly excited state from Breit effect and quantum electrodynamic （QED） effect, KLL DR resonant energies, total line width and corresponding DR resonant strength have been calculated and analyzed. A good overall agreement was found between the present calculations and the previous theoretical and experimental result. Based on the calculation of Hg ions, the KLL DR process of highly charged uranium ions was studied theoretically. The comparison of present results with the other theoretical and experimental results has been made.

关 键 词：双电子复合 MCDF 高离化态 Hg离子 U离子 Breit效应 量子电动力学效应 

分 类 号：O562[理学—原子与分子物理]