Rotational-level-dependent quenching of A 2Σ+ OH and OD
- 1 May 1985
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 82 (9) , 4022-4032
- https://doi.org/10.1063/1.448843
Abstract
Rate constants kQ for collisional quenching of A 2Σ+, v’=0, OH and OD have been measured for specific rotational levels N’ of the radical and a wide variety of collision partners. Through measurements of the time‐dependent laser‐induced fluorescence in a low pressure discharge flow at room temperature, we observe a decrease in kQ with increasing rotational quantum number for most quenchers. The internal levels of the collision pairs appear unimportant from experiments involving deuterium substitution. A comparison of rotationless rates for different colliders [kQ(N=0)] with calculations based on collision complex formation indicate that attractive forces play a role in the quenching process.Keywords
This publication has 19 references indexed in Scilit:
- Rotational level dependence of electronic quenching of OH(A 2Σ+, ν′ = 0)Chemical Physics Letters, 1984
- Reply to comments on the paper "Laser-excited fluorescence of the hydroxylradical: relaxation coefficients at atmospheric pressure" by C. Y. Chan, R. J. O'Brien, T. M. Hard, and T. B. CookThe Journal of Physical Chemistry, 1984
- Comments on "Laser excited fluorescence of the hydroxyl radical: relaxation coefficients at atmospheric pressure" by C. Y. Chan, R. J. O'Brien, T. M. Hard and T. R. CookThe Journal of Physical Chemistry, 1984
- Comments on "Laser-excited fluorescence of the hydroxyl radical: relaxation coefficients at atmospheric pressure"The Journal of Physical Chemistry, 1984
- Polarization of laser-induced fluorescence in OH in an atmospheric pressure flameApplied Optics, 1984
- Laser-excited fluorescence of the hydroxyl radical: relaxation coefficients at atmospheric pressureThe Journal of Physical Chemistry, 1983
- Laser-Induced Fluorescence Spectroscopy For Combustion DiagnosticsOptical Engineering, 1983
- Collisional Effects On Laser-Induced Fluorescence Flame MeasurementsOptical Engineering, 1981
- Reaction kinetics involving ground X2Π and excited A2Σ+hydroxyl radicals. Part 1.—Quenching kinetics of OH A2Σ+and rate constants for reactions of OH X2Π with CH3CCl3and COJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1979
- Rotational dependence of vibrational relaxation in a 2Σ+ OHChemical Physics Letters, 1975