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Multiply Charged Ions Produced in Multiphoton Ionization of Rare Gas Atoms

  • L. A. Lompré
  • G. Mainfray
Conference paper
Part of the Springer Series on Atoms+Plasmas book series (SSAOPP, volume 2)

Abstract

Multiphoton ionization of atoms is a typical example of one of the new fields of investigation in atomic physics that lasers have opened up. The different aspects of the multiphoton ionization of one-electron atoms have been well understood these last few years. They can be correctly described by rigorous theoretical models in the framework of perturbation theory when only one electron is assumed to be involved in the ionization [1–5]. Alkaline atoms which have only one valence electron, and of course atomic hydrogen, are the examples that best satisfy this condition. For example the different aspects of multiphoton ionization of cesium atoms now form a well developed field. Accurate measurements of absolute values of the two and four-photon ionization cross sections of cesium atoms are in good agreement with calculated values, and clearly emphasize the validity of perturbation theory [6]. In the same way, there is also a good agreement between theoretical and experimental results on resonance effects in multiphoton ionization of cesium atoms in the moderate laser intensity range, 107–109 W.cm-2 [7]. Resonance effects emphasize the important role played by laser-induced atomic level shifts. Destructive interference effects, which give rise to minima in the multiphoton ionization cross sections of atoms, have been investigated with a high degree of accuracy in the two-photon ionization of Cs atoms [8].

Keywords

Laser Intensity Multiphoton Ionization Cesium Atom Multiphoton Absorption Simultaneous Excitation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • L. A. Lompré
    • 1
  • G. Mainfray
    • 1
  1. 1.Service de Physique des Atomes et des SurfacesCentre d’Etudes Nucléaires de SaclayGif-sur-Yvette CedexFrance

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