Probing the valence character of O-1s -> Rydberg excited O-2 by participator Auger decay measurements and partial ion yield spectroscopy following x-ray absorption

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Abstract

The valence character of O 1s -> Rydberg excited O-2 is investigated by means of participator Auger decay spectroscopy, performed at selected photon energies across the K-shell resonance region, and by means of partial ion yield x-ray absorption spectroscopy. For several of the excitation energies studied, the authors find substantial sigma(*)((4)Sigma(-)(u),(2)Sigma(-)(u)) valence character being mixed with ns sigma and np sigma ((4)Sigma(-)(u),(2)Sigma(-)(u)) Rydberg states. An experimental indication of a coupling between the channels associated with quartet and doublet ion cores is considered and discussed. New spectroscopic constants are derived for the singly ionized X (2)Pi(g) state of O-2 based on the observation of at least 20 vibrational sublevels. (C) 2007 American Institute of Physics.

Detaljer

Författare
  • R. Feifel
  • T. Tanaka
  • M. Kitajima
  • H. Tanaka
  • A. De Fanis
  • R. Sankari
  • L. Karlsson
  • Stacey Ristinmaa Sörensen
  • M.-N. Piancastelli
  • G. Prumper
  • U. Hergenhahn
  • K. Ueda
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik
Originalspråkengelska
Artikelnummer174304
TidskriftJournal of Chemical Physics
Volym126
Utgivningsnummer17
StatusPublished - 2007
PublikationskategoriForskning
Peer review utfördJa