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低频调制场中钾原子的激发 被引量:2

Excitation of potassium atoms in a slow frequency-modulated field
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摘要 本文用含时多态展开方法计算了里德堡钾原子在静电场、微波场和低射频场 [aradio frequency(rf)field]共同作用下方波振荡的激发特性。研究计算了通过改变微波场的频率、振幅和静电场的振幅以及用低射频锯齿波代替低射频余弦波后方波振荡的变化 ,获得了一些非常有趣的结果 。 Using the time-dependent multilevel approach (TDMA), we have calculated the square wave oscillation of the excited Rydberg potassium atoms in the presence of the microwave field, the static electric field and the radio-frequency (rf) field. After changing the frequency, amplitude of the microwave and the static electric field, and replacing the slow radio-frequency (rf) cosine wave with the slow radio-frequency (rf) sawtooth wave, we have also studied the change of the square wave oscillation and got some interesting results, and the theoretic explanation of these results were given.
出处 《原子与分子物理学报》 CAS CSCD 北大核心 2005年第1期83-85,共3页 Journal of Atomic and Molecular Physics
基金 河南省自然科学基金 ( 0 4110 1190 0 )
关键词 TDMA方法 低射频场 方波振荡 TDMA method The slow radio-frequency (rf) field Square wave oscillation
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参考文献5

  • 1Moorman L, Galvez E J, Sauer B E, et al. Twofrequency microwave quenching of highly excited hydrogen atoms[J]. Phys. Rev. Lett., 1988,61:771.?A
  • 2Michael W. Noel, Griffith W M, Gallagher T F.Frequency-modulated excitation of a two-level atom[J ].Phys. Rev. ,1998, A58:2 265.?A
  • 3Zhang X Z, Jiang H M, Rao J G, et al. Frequencymodulated excitation of potassium atoms [J ]. Phys.Rev. ,2003, A68: 025401.?A
  • 4Zhang X Z, Jiang H M, Rao J G, et al. Population trapping and excitation of a potassium atom in a frequency modulated field [ J ]. J. Phys., 2003, B36:4 089.?A
  • 5He X H, Li B W, Chen A Q, et al. Model-potential calculation of lifetimes of Rydberg states of alkali atoms [J]. J. Phys., 1990, B23: 661.?A

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