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Autoionising 4dnf States and Multiphoton Ionisation Studies in Strontium

  • Pierre Camus
  • Michael Kompitsas
  • Samuel Cohen
  • Cleanthes Nicolaïdes
  • Mireille Aymar
  • Michèle Crance
  • Pierre Pillet
Part of the NATO ASI Series book series (NSSB, volume 212)

Abstract

In Sr, we report the preliminary data obtained using one-colour and two-colour laser excitations in an atomic beam associated with a time-of-flight (T.O.F.) ion detection technique. In section 1, the Sr+ yield measured in the range 532–541 nm with the one-colour excitation exhibits many resonance lines. They correspond to 2-photon excitation of bound states and 3-photon excitation of autoionising 4d5f states. Results obtained from a two-colour laser excitation via the 5p2 1D2 bound level improve the resolution and confirm the J-level assignation of the 4d5f states from the one-colour experiment. They extend the observation to other members of the 4dnf series (n = 4 and 6).

Keywords

Atomic Beam Yield Spectrum Double Ionisation Excitation Scheme Resonance Profile 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Pierre Camus
    • 1
  • Michael Kompitsas
    • 2
  • Samuel Cohen
    • 2
  • Cleanthes Nicolaïdes
    • 2
  • Mireille Aymar
    • 1
  • Michèle Crance
    • 1
  • Pierre Pillet
    • 1
  1. 1.Laboratoire Aimé CottonCNRS IIOrsay CédexFrance
  2. 2.Theoretical and Physical Chemistry InstituteNational Hellenic Research FoundationAthensGreece

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