高离化态Au离子光电离过程的理论研究  

Theoretical Studies on Photoionization Processes of Highly Charged Au Ions

作　　者：王云荣[1] 刘晓斌[1] 丁晓彬[1] 董晨钟[1] 

机构地区：[1]西北师范大学物理与电子工程学院,甘肃省原子分子物理与功能材料重点实验室,甘肃兰州730070

出　　处：《原子核物理评论》2011年第2期245-250,共6页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(10434100,10774122,10876028);高等学校博士学科点专项科研基金资助项目(20070736001)~~

摘　　要：基于多组态Dirac-Fock方法的程序包GRASP92和RATIP及在此基础上最新发展的RELPHOTO08程序,系统地研究了高离化态金离子M壳层的光电离截面随入射光子能量、离化度以及壳层的变化规律。结果表明:光电离截面随光子能量的增大而单调减小;电离nl电子时,如果相关电子的主量子数较大,则该电子存在与否对其光电离截面几乎没有影响;在同一离化度下,角量子数l可引起两种性质不同的效应,其相互竞争可导致光电离截面随入射光子能量的复杂变化。Based on multiconfiguration Dirac-Fock method and the corresponding packages GRASP92 and RATIP,as well as the newly developed RELPHOTO08,the variations of M subshell photoionization cross sections with the photon energy,ionization degree and subshells for highly charged gold ions are studied systemically.The present results show that the cross sections are decreasing monotonously with the photon energy;for the photoionization of nl electrons,if the principal quantum number of removed electron is large enough,the cross sections are essentially unchanged upon the presence or absence of outer electrons;for same ionization degree,the angular quantum number introduces two opposite effects which could exist simultaneously,and the intricate variations of cross sections with the photon energy originate from the competition between these two different effects.

关 键 词：多组态DIRAC-FOCK方法 光电离 截面 

分 类 号：O562.4[理学—原子与分子物理]