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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry