中国物理B ›› 2002, Vol. 11 ›› Issue (7): 656-660.doi: 10.1088/1009-1963/11/7/302

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Recurrence spectra of non-hydrogen Rydberg atoms in parallel electric and magnetic fields

宋晓红, 张秋菊, 薛艳丽, 赵珂, 李玉, 林圣路   

  1. Department of Physics, Shandong Normal University, Jinan 250014, China
  • 收稿日期:2001-11-29 修回日期:2002-03-18 出版日期:2002-07-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the Natural Science Foundation of Shandong Province of China (Grant No Y98A06009)

Recurrence spectra of non-hydrogen Rydberg atoms in parallel electric and magnetic fields

Song Xiao-Hong (宋晓红), Zhang Qiu-Jü (张秋菊), Xue Yan-Li (薛艳丽), Zhao Ke (赵珂), Li Yu (李玉), Lin Sheng-Lu (林圣路)   

  1. Department of Physics, Shandong Normal University, Jinan 250014, China
  • Received:2001-11-29 Revised:2002-03-18 Online:2002-07-12 Published:2005-06-12
  • Supported by:
    Project supported by the Natural Science Foundation of Shandong Province of China (Grant No Y98A06009)

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摘要： We present a new method for computing the recurrence spectra of n≈40, m=0 lithium Rydberg atoms in strong parallel external electric and magnetic fields. This method is based on an extended closed-orbit theory allowing the computation of the scattering of the electron by the ionic core. We pay particular attention to the scaling properties, which are extremely important for understanding the correspondence between classical and quantum mechanics. The spectra with a constant scaled electric field \tilde F=0.01 and a scaled energy ε=-0.03 are recorded and compared with those of hydrogen obtained by the standard closed-orbit theory. The result shows that the additional strong resonance structures can be interpreted in terms of the core-scattered classical closed orbits.

Abstract: We present a new method for computing the recurrence spectra of n ≈ 40, m = 0 lithium Rydberg atoms in strong parallel external electric and magnetic fields. This method is based on an extended closed-orbit theory allowing the computation of the scattering of the electron by the ionic core. We pay particular attention to the scaling properties, which are extremely important for understanding the correspondence between classical and quantum mechanics. The spectra with a constant scaled electric field $\tilde{F}$ = 0.01 and a scaled energy $\varepsilon$ = -0.03 are recorded and compared with those of hydrogen obtained by the standard closed-orbit theory. The result shows that the additional strong resonance structures can be interpreted in terms of the core-scattered classical closed orbits.

Key words: closed-orbit theory, recurrence spectrum, region-splitting consistent and iterative method, core scattering

中图分类号:  (Scattering of atoms and molecules)

  • 34.50.-s
32.80.Rm (Multiphoton ionization and excitation to highly excited states)