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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Influence of the Stark effect on multiphoton ionization of atoms when the dynamic polarizability depends strongly on the laser frequency
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Influence of the Stark effect on multiphoton ionization of atoms when the dynamic polarizability depends strongly on the laser frequency

机译：当动态极化率强烈取决于激光频率时，斯塔克效应对原子的多光子电离的影响

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摘要

The influence of the Stark effect on multiphoton ionization of Ba atoms under conditions when the dynamic polarizability depends strongly on the frequency of the laser radiation is investigated. It is found that for some electric field strengths ε of the laser radiation this effect gives rise to resonance peaks in the Ba~+ ion yield as a function of the laser radiation frequency at frequencies corresponding to single-photon transitions between the excited states. These frequencies can differ substantially from the frequencies corresponding to the conventional multiphoton excitation of these states from the ground states of the atoms. Peaks in the ion yield as a function of ε behave differently form the conventional Stark effect-their position on the frequency scale does not depend strongly on ε. The conditions under which such an induced resonance structure appears are determined.
机译：研究了动态极化率在很大程度上取决于激光辐射频率的条件下，斯塔克效应对Ba原子多光子电离的影响。已经发现，对于激光辐射的某些电场强度ε，在与激发态之间的单光子跃迁相对应的频率处，该效应在Ba〜+离子产率中产生共振峰，该共振峰是激光辐射频率的函数。这些频率可以与对应于从原子的基态到这些状态的常规多光子激发的频率基本不同。离子产量的峰作为ε的函数与常规的斯塔克效应不同，它们在频率范围上的位置与ε的依赖性不大。确定这种诱导的共振结构出现的条件。

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