Atomic Autoionization Observed in nd → O* Molecular Resonances

  • P. Morin
Part of the NATO ASI Series book series (NSSB, volume 151)

Abstract

The excitation of a core electron into an antibonding empty valence orbital of a molecule leads to a quite intense resonance compared to Rydberg transitions in the photoabsorption spectrum. We show the direct experimental evidence of its repulsive character by photoelectron spectroscopy in the case of a d-shell excitation of halogen compounds such as HBr, CH3 Br, HI and CH3 I. The first step of the resonance decay is a very fast dissociation process followed by autoionization of the core excited fragment as a second step. Competition with usual molecular autoionization is found when the mass of the radical linked to the excited atom is increased.

Keywords

Iodine Iodide Hydride Auger Halogen 

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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • P. Morin
    • 1
    • 2
  1. 1.LURE Laboratoire commun CNRSCEA et MEN Université de Paris SudOrsay CedexFrance
  2. 2.Département de PhysicochimieCEA, CEN SaclayGIF SUR Yvette CedexFrance

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