中国物理B ›› 2008, Vol. 17 ›› Issue (3): 801-806.doi: 10.1088/1674-1056/17/3/011

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Short-ranged potential effects on the recurrence spectra of lithium M = 1 atoms in parallel electric and magnetic fields

王文鹏, 李洪云, 王树宝, 林圣路   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • 收稿日期:2007-07-11 修回日期:2007-08-21 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10774093 and 10374061).

Short-ranged potential effects on the recurrence spectra of lithium M = 1 atoms in parallel electric and magnetic fields

Wang Wen-Peng(王文鹏), Li Hong-Yun(李洪云), Wang Shu-Bao(王树宝), and Lin Sheng-Lu(林圣路)†   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2007-07-11 Revised:2007-08-21 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10774093 and 10374061).

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摘要： This paper presents recurrence spectra of highly excited lithium atoms with M = 1 state in parallel electric and magnetic fields at a fixed scaled energy \varepsilon = - 0.03. Short-ranged potentials including ionic core potential and centrifugal barrier are taken into account. Their effects on the states and photo-absorption spectrum are analysed in detail. This demonstrates that the geometric features of classical orbits are of special importance for modulations of the spectral pattern. Thus the weak polarization as well as the reduction of correlation of electrons induced by short-ranged potentials give rise to the recurrence spectra of lithium M = 1 atoms more compact than that of the M = 0 one, which is in good agreement with the experimental prediction.

关键词: closed-orbit theory, recurrence spectra, short-ranged potential, centrifugal barrier

Abstract: This paper presents recurrence spectra of highly excited lithium atoms with M = 1 state in parallel electric and magnetic fields at a fixed scaled energy $\varepsilon$ = - 0.03. Short-ranged potentials including ionic core potential and centrifugal barrier are taken into account. Their effects on the states and photo-absorption spectrum are analysed in detail. This demonstrates that the geometric features of classical orbits are of special importance for modulations of the spectral pattern. Thus the weak polarization as well as the reduction of correlation of electrons induced by short-ranged potentials give rise to the recurrence spectra of lithium M = 1 atoms more compact than that of the M = 0 one, which is in good agreement with the experimental prediction.

Key words: closed-orbit theory, recurrence spectra, short-ranged potential, centrifugal barrier

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)