Shape resonance and non-Franck–Condon behavior in the photoelectron spectra of O2 produced by (2+1) multiphoton ionization via 3sσ Rydberg states
- 15 September 1988
- journal article
- letter
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 89 (6) , 3921-3922
- https://doi.org/10.1063/1.454868
Abstract
Photoelectron spectra produced by (2+1) MPI via the v=0–3 levels of the (3sσg ) C 3 Πg Rydberg state of O2 show large deviations from the Franck–Condon principle. These deviations are attributed largely to a shape resonance in the σu ionization channel and probably a ‘‘window’’ resonance in the 3 Σ−u part of the πu channel.Keywords
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