I^(51+)离子的KLn双电子复合过程研究  

The Study of Dielectronic Recombination for Ground State of He-like Iodine Ions

作　　者：杨建会[1] 范强[1] 张建平[1] 

机构地区：[1]乐山师范学院物理与电子工程学院,四川乐山614004

出　　处：《四川师范大学学报（自然科学版）》2014年第4期547-551,共5页Journal of Sichuan Normal University（Natural Science）

基　　金：四川省科技厅自然科学基金(2011JYZ005);四川省教育厅自然科学基金(13ZB0111)资助项目

摘　　要：使用相对论组态相互作用方法计算类氦I离子的KLn双电子共振强度、速率系数.双电子复合共振强度随着n的增加迅速降低.对于同一个双激发态,通过内壳层衰退的双电子复合共振强度和速率系数高于通过外壳层衰退的双电子复合共振强度和速率系数.通过内壳层2p电子辐射衰退的通道1s2pnl-1s2nl是最主要的KLn双电子复合辐射衰退通道.1s2pnl-1s2nl辐射衰退通道中对双电子复合速率系数贡献最大的是1s2p2-1s22p辐射衰退通道.1s2p2-1s22p辐射衰退通道的双电子复合速率系数占1s2pnl-1s2nl辐射通道速率系数的70%.The KLn dielectronic recombination （DR） cross section, resonant strength and rate coefficient of helium-like iodine have been studied in detail. With the increase of n, the average radiative branching ratio of formant increases, and the KLn DR reso- nant strength speedily decreases. The resonant strengths and rate coefficient from the radiative transition of inner shell are higher than that from the radiative transition of outer shell. The radiative channel ls2pnl-lsZnl is the dominant DR channel of KLn DR. For l s2pnl-ls2nl radiative channel, the main contribution is from l s2p2-1s22p radiative channel, whose DR rate coefficient is about 70% of the rate coefficient of 1 s2pnl-1 s2 nl radiative channel.

关 键 词：相对论组态相互作用 截面 共振强度 速率系数 

分 类 号：O562[理学—原子与分子物理]