类氢U^91＋离子的辐射复合及其辐射退激发过程的理论研究  

Theoretical study on radiative recombination and subsequent radiative decay of H-like uranium ions

作　　者：王永军[1] 万建杰[1] 丁晓彬[1] 董晨钟[1] 马新文[2] 王建国[3] 吴勇[3] 

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070 [2]中国科学院近代物理研究所,兰州730000 [3]北京应用物理与计算数学研究所计算物理重点实验室,北京100088

出　　处：《物理学报》2009年第4期2358-2363,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10434100,10774122,10876028);高等学校博士学科点专项科研基金(批准号:20070736001);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(批准号:NWNU-KJCXGC-03-21)资助的课题~~

摘　　要：基于多组态Dirac-Fock理论方法,利用GRASP92和RATIP以及在此基础上最新发展的RERR06程序,对类氢U91+(1s)离子的辐射复合截面以及辐射退激发过程进行了详细的理论研究.系统地计算了具有确定能量的连续电子被处于基态的类氢U91+(1s)离子俘获到nl(1≤n≤8,0≤l≤6)轨道形成类氦U90+(1snl)离子的辐射复合截面,并研究了这些辐射复合末态退激发谱的相对强度.研究发现,类氢U91+(1s)离子辐射复合到不同轨道的截面随其主量子数的增大而显著减小;同时,辐射复合末态的退激发对Kα谱线的相对强度有重要影响.Based on multi-configuration Dirac-Fock method,radiative recombination（RR）process of H-like uranium ion and radiative decay process of the resultant ion have been studied systematically using the recently developed program RERR06,which is based on GRASP92 and RATIP packages.In the studies,the RR cross sections from 1s state of H-like uranium ion to 1snl（1≤n≤8,0≤l≤6）of He-like uranium ion have been calculated in detail.Meanwhile,the relative intensity of the radiative decay spectra of the RR final states have also been studied.It was found that the RR cross sections to different orbitals decrease with the increasing of principal quantum number.Furthermore,an important contribution of the radiative decay of the RR final states to the relative intensity of Kα spectra has also been found in the present work.

关 键 词：辐射复合 多组态Dirac-Fock理论方法 辐射退激发 

分 类 号：O562.4[理学—原子与分子物理]