Vibrational deactivation studies of OH X 2Π (ν = 1-5) by N2 and O2

Luca D'Ottone, Dieter Bauer, Pedro Campuzano-Jost, Melissa Fardy, Anthony J. Hynes

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24 Scopus citations

Abstract

The deactivation kinetics of vibrationally excited OH X 2Π (ν = 1-5) were studied using a pulsed laser photolysis-pulsed laser induced fluorescence technique. Temporal profiles of OH (ν) were obtained by exciting off-diagonal (Δν = -1,-3) transitions in the A-X band of OH and monitoring the diagonal, blue shifted fluorescence. Photolysis of O3 at 266 nm was used to produce O1D which reacted rapidly with H 2, CH4 and H2O to produce OH (ν). Deactivation rate coefficients for OH (ν = 1-5) with O2 and N 2 and for OH (ν = 2,1) with O3 were obtained. The deactivation rate coefficients show an exponential dependence on vibrational level for both O2 and N2, however O2 is much more efficient.

Original languageEnglish (US)
Pages (from-to)4276-4282
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume6
Issue number17
DOIs
StatePublished - Sep 7 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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