中国物理B ›› 2004, Vol. 13 ›› Issue (1): 30-35.doi: 10.1088/1009-1963/13/1/007

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The closed-orbit and the photoabsorption spectra of lithium atom in varying magnetic fields

丁世良1, 王德华2   

  1. (1)School of Physics and Microelectronics, Shandong University, Jinan 250100, China; (2)School of Physics and Microelectronics, Shandong University, Jinan 250100, China; Department of Mathematics and Physics, Shandong Institute of Architecture and Engineering, Jinan 250014, China
  • 收稿日期:2003-03-21 修回日期:2003-06-02 出版日期:2004-01-22 发布日期:2007-03-22
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 20173031), the Science Foundation of Shandong Province, China, and the Doctoral Foundation from the Ministry of Education of China.

The closed-orbit and the photoabsorption spectra of lithium atom in varying magnetic fields

Wang De-Hua (王德华)ab, Ding Shi-Liang (丁世良)a   

  1. a School of Physics and Microelectronics, Shandong University, Jinan 250100, China; b Department of Mathematics and Physics, Shandong Institute of Architecture and Engineering, Jinan 250014, China
  • Received:2003-03-21 Revised:2003-06-02 Online:2004-01-22 Published:2007-03-22
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 20173031), the Science Foundation of Shandong Province, China, and the Doctoral Foundation from the Ministry of Education of China.

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摘要： Using a simple analytic formula from closed orbit theory, we have calculated the photoabsorption spectra of Li atom in different magnetic fields. Closed orbits in the corresponding classical system have also been obtained for B=5.96T. We demonstrate schematically that the closed orbits disappear gradually with the decrease of the magnitude of the magnetic field. This gives us a good method to control the closed orbits in the corresponding system by changing the magnetic field, and thus changing the peaks in the photoabaorption spectra. By comparing the photoabsorption spectra of Li atom with those of hydrogen case, we find the core-scattered effects play an important role in multi-electron Rydberg atoms.

关键词: closed-orbit theory, photoabsorption spectra, core-scattered effects

Abstract: Using a simple analytic formula from closed orbit theory, we have calculated the photoabsorption spectra of Li atom in different magnetic fields. Closed orbits in the corresponding classical system have also been obtained for B=5.96T. We demonstrate schematically that the closed orbits disappear gradually with the decrease of the magnitude of the magnetic field. This gives us a good method to control the closed orbits in the corresponding system by changing the magnetic field, and thus changing the peaks in the photoabaorption spectra. By comparing the photoabsorption spectra of Li atom with those of hydrogen case, we find the core-scattered effects play an important role in multi-electron Rydberg atoms.

Key words: closed-orbit theory, photoabsorption spectra, core-scattered effects

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.)) 32.30.-r (Atomic spectra?)