Anomalous isotopic predissociation in the F3u(v = 1) state of O2

B. R. Lewis*, S. T. Gibson, J. P. England, G. Stark, J. B. West

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    F 3πu←X3σg- (1,0) photoabsorption cross sections of 16O2 and 18O2 were reported. The cross sections were recorded in high resolution using a tunable, narrow-bandwidth vacuum-ultraviolet source based on third-harmonic generation from excimer-pumped dye-laser radiation. A large rotationless isotope effect was observed in the F(v = 1) predissociation. Spectroscopic parameters were determined for the F(v = 1) levels of 16O2 and 18O2 and the isotopic pattern of predissociation was explained with the aid of coupled-channel Schrödinger equation models.

    Original languageEnglish
    Pages (from-to)3286-3296
    Number of pages11
    JournalJournal of Chemical Physics
    Issue number8
    Publication statusPublished - 22 Feb 2002


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