Relativistic Multichannel Treatment of Ionic Rydberg States of Lanthanum  

作　　者：张新峰 贾凤东 钟志萍 薛平 许祥源 颜君 

机构地区：[1]The Key Laboratory of Atomic and Molecular Nanosciences of the Ministry o f Education, Department of Physics, Tsinghua University, Beijing 100084 [2]College of Physical Sciences, Graduate University of the Chinese Academy of Sciences, PO Box 4588, Beijing 100049 [3]Department of Physics, Capital Normal University, Beijing 100037 [4]Institute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088

出　　处：《Chinese Physics Letters》2007年第10期2808-2811,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10574162, 10676014, 10674021 and 90508001, the Scientific Research Fund of Graduate University of the Chinese Academy of Sciences under Grant No 055101BM03, the Ministry of Education of China under Grant No 306020, the Hi-Tech Research and Development Programme of China under Grant No 2006AA02Z472, and the National Key Basic Research Programme of China under Grant No 2005CB724500.

摘　　要：Ionic Rydberg energy levels of lanthanum are calculated from first principles by relativistic multichannel theory within the framework of multichannel quantum defect theory. The present calculated results are in better agreement with the experimental measurements than the previous calculations [J. Phys. B 34 （2001）369] due to the consideration of dynamical polarizations. Moreover, in the experimental spectra achieved by a five-laser resonance excitation via the intermediate state 5d6d^3 F2, a series of weak ionic Rydberg states and some of perturbing states are found and assigned in this work.Ionic Rydberg energy levels of lanthanum are calculated from first principles by relativistic multichannel theory within the framework of multichannel quantum defect theory. The present calculated results are in better agreement with the experimental measurements than the previous calculations [J. Phys. B 34 （2001）369] due to the consideration of dynamical polarizations. Moreover, in the experimental spectra achieved by a five-laser resonance excitation via the intermediate state 5d6d^3 F2, a series of weak ionic Rydberg states and some of perturbing states are found and assigned in this work.

关 键 词：QUANTUM-DEFECT THEORY AUTOIONIZATION STATES SPECTROSCOPY 

分 类 号：O57[理学—粒子物理与原子核物理]