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Non Franck-Condon effects in the photoionization of molecular nitrogen to the N+ A 2II state in the 19-34 eV photon energy region.

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Author

  • Jaume Rius i Riu
  • Andrzej Karawajczyk
  • Marek Stankiewicz
  • Ken Yoshiki Franzén
  • Piotr Winiarczyk
  • Leif Veseth

Summary, in English

Photoionization to the N2+ A 2Πu state is studied using photoelectron spectroscopy. Experimentally, vibrational branching ratios for the v′=0–3 levels obtained for the first time in the 20–34 eV region, show strong non Franck–Condon effects around 22 eV. Using ab initio many body perturbation theory, branching ratios for ionization to the A 2Πu state are calculated. This study indicates that the Franck–Condon breakdown in the photoionization of the N2 1πu electron is due to autoionization from Rydberg and valence states of N2.

Publishing year

2001

Language

English

Pages

285-290

Publication/Series

Chemical Physics Letters

Volume

338

Issue

4-6

Document type

Journal article (letter)

Publisher

Elsevier

Topic

  • Communication Systems
  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 0009-2614