Xe原子的等核及等电子系列离子4f波函数塌缩研究  

Theoretical study on the collapse of the 4f wave function in Xe isonuclear and isoelectronic sequence ions

作　　者：李继弘[1,2] 董晨钟[2,3] 

机构地区：[1]陇东学院物理与电子工程学院,甘肃庆阳745000 [2]西北师范大学物理与电子工程学院,甘肃兰州730070 [3]西北师范大学与中科院近代物理研究所极端环境原子分子物理联合实验室,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2011年第4期37-42,47,共7页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(107741228;1087602);高等学校博士学科点专项科研基金资助项目(20070736001);西北师范大学科技创新工程资助项目(NWNU-KJCXGC-03-21);陇东学院科研基金资助项目(XYZK0803)

摘　　要：利用HFR和LS-dependent(LS-D)的HFR自洽场方法,系统地计算了Xe原子的等核及等电子系列离子的4f电子径向波函数,讨论了4f波函数塌缩与谱相的强烈依赖关系.通过进一步计算4d10→4d9nf跃迁振子强度,说明实验上观察到的Ba2+光谱上强吸收线的出现是由于4f轨道的部分塌缩导致4d→nf1P跃迁产生的.对于高电离的Xe原子的等电子系列离子,4f轨道完全塌缩以后,跃迁振子强度主要集中在4f1P能级,使得吸收光谱上的唯一强吸收线是由于4d→4f1P跃迁产生的.Self-consistent-field calculations of the 4f electron radial wave function for XeⅠ isonuclear and isoelectronic sequence ions have been made using HFR and LS-dependent HFR methods including correlation and relativistic effects.The collapse behaviors of the 4f wave functions have been studied systematically.The results show that the collapse of the 4f wave function is strongly term dependent.Furthermore,the oscillator strengths of the 4d10→4d9nf have been computed in Xe-like ions.It is found that the appearance of intense absorption lines in the observed Ba2＋ spectrum is due to the partial collapse of the 4f orbital in the 4d→nf1P channel.It is show that after 4f orbital is completely collapsed for high degrees of ionization along the isolelectronic sequence,the bulk of absorption oscillator strengths is concentrated at the 4d94f1P level so that the only strong line in the spectrum is again the 4d→4f1P.

关 键 词：Xe原子 波函数 塌缩 振子强度 自洽场 

分 类 号：O562.1[理学—原子与分子物理]