Ne原子的1s光电离及其Auger衰变过程的理论研究  

Theoretical study on Ne 1s photoionization and corresponding Auger decay processes

作　　者：王向丽[1] 董晨钟[1] 桑萃萃[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》2009年第8期5297-5303,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号: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基金(批准号: NWNU-KJCXGC-03-21)资助的课题~~

摘　　要：利用基于多组态Dirac-Fock理论方法的研究原子结构和性质的程序GRASP92和RATIP以及最新发展的研究光电离和辐射复合过程的程序RERR06,研究了光子能量为947.9eV时Ne原子的1s光电子谱及其相应的Auger衰变过程.所得结果与其他的理论结果和实验结果符合得很好.通过分析光电离伴随态Ne+1s-12p-1(1,3P)3p的Auger衰变过程可知:3p旁观的Auger跃迁是主要的衰变机制,Ne+1s-12p-1(1P)3p的Auger强度整体上大于Ne+1s-12p-1(3P)3p的Auger强度.同时,也预言了光电离伴随态Ne+1s-12p-1(1,3P)3p产生的Ne+,Ne2+和Ne3+末电离态离子的相对丰度分别为0.02,0.58和0.41.In this paper, the Ne ls photoelectron spectrum and the corresponding Auger decay processes have been investigated theoretically by using the GRASP92, RATIP and the recently developed RERR06 codes based on the multi-configuration Dirac- Fock method. Good overall agreement was found between the present calculations and the previous theoretical and experimental results. By analyzing the Auger decay processes of the photoionization satellite state Ne ＋ 1 s12p1 （1.3 p）3p, it was found that the spectator Auger decay is the dominant decay mode and the Auger intensity of the Ne ＋ 1 s-12p-1 （1 p）3p is greater than that of the Ne＋1s-12p-l（3 P）3p as a whole. Meanwhile, the relative populations of the final ions Ne＋ , Ne2 ＋ and Ne3＋ produced by the photoionization satellite state Ne＋ 1s-12p-1 （1,3 P）3p were predicted to be 0.02, 0.58 and 0.41, respectively.

关 键 词：光电离 Auger衰变 多组态DIRAC-FOCK方法 

分 类 号：O562.4[理学—原子与分子物理]