Fe原子能级和跃迁参数的研究  

Study on the energy levels and transition parameters of Fe atom

作　　者：李向富 张杰 田春山 贾利平 LI Xiangfu;ZHANG Jie;TIAN Chunshan;JIA Liping(College of Electrical Engineering,Longdong University,Qingyang 745000,China;Department of Fundamental Courses,Qinghai University,Xining 810016,China)

机构地区：[1]陇东学院电气工程学院,甘肃庆阳745000 [2]青海大学基础部,青海西宁810016

出　　处：《青海大学学报》2021年第3期101-106,共6页Journal of Qinghai University

基　　金：甘肃省科学技术厅科技计划资助项目(20JR10RA131):陇东学院博士科研启动基金(XYBY202005)。

摘　　要：Fe原子有着丰富的谱线,其结构和跃迁光谱的研究在天体物理、等离子体物理、同位素分离和软X射线激光等领域中有着重要的指导意义。本文利用Cowan程序计算了Fe原子3d64s2和3d64s4p组态的能级以及3d^(6)4s^(2)-3d^(6)4s4p的跃迁能和跃迁波长。结果表明:从头计算的3d^(6)4s^(2)和3d^(6)4s^(4)p组态的能级与NIST推荐值的相对误差是比较大的,分别大于2%和20%;利用最小二乘法对能级和表征电子间相互作用的各个参量进行拟合后,所计算的能级、跃迁能和跃迁波长与NIST推荐值符合很好。本文所描述的最小二乘法拟合方法对于其他原子结构计算具有非常重要的参考价值。The structure and transition spectra of Fe atom are of great significance in astrophysics,plasma physics,isotope separation and soft X-ray laser wth abundant spectral lines.The energy levels of 3d64s2 and 3d64s4p configuration of Fe atom are calculated by Cowan program in this paper as well as the transition energies and wavelengths of 3d64s2-3d^(6)4s^(4)p.The results show that the relative errors between the ab initio calculated energy levels of 3d^(6)4s^(2) and 3d^(6)4s4p configuration and the values recommended by NIST are 2%and 20%larger respectively.The calculated energy levels,transition energies and transition wavelengths are in good agreement with those values recommended by NIST after fitting the energy levels and the parameters characterizing the interaction between electrons with least square method.The least square fitting method described in this paper has important reference value for other atomic structure calculation.

关 键 词：Fe原子 能级 跃迁能 跃迁波长 

分 类 号：O56[理学—原子与分子物理]