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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Predissociation of the 4p pi L-1 Pi Rydberg state of carbon monoxide

Author

  • P Cacciani
  • F Brandi
  • JP Sprengers
  • Ann Johansson
  • Anne L'Huillier
  • Claes-Göran Wahlström
  • W Ubachs

Summary, in English

Time-domain and frequency-domain spectroscopic experiments have been performed on the (4ppi)L(1)Pi, v = 0 Rydberg state in three isotopomers of carbon monoxide. Accurate values for the excited state lifetimes of the f-parity components have been determined: tau((CO)-C-12-O-16) = 1.08 +/- 0.05 ns, tau((CO)-C-13-O-16) = 72 +/- 10 ps and tau((CO)-C-13-O-18) = 29 +/- 6 ps. The spectral resolution in the frequency-domain experiment goes as far as the limit imposed by the natural lifetime; Q-branch lines, or f-parity components of the heavier isotopes, are resolved for the first time. Highly accurate transition frequencies are determined in a molecular beam experiment using comparison and interpolation with a saturated iodine reference standard. The results reveal a number of perturbations and predissociation mechanisms, displaying a high degree of complexity in the energetic region of the 4p Rydberg states of CO with strong isotopic effects. (C) 2002 Elsevier Science B.V. All rights reserved.

Department/s

  • Atomic Physics

Publishing year

2002

Language

English

Pages

63-73

Publication/Series

Chemical Physics

Volume

282

Issue

1

Document type

Journal article

Publisher

Elsevier

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0301-0104