Nizkorodov, S.
, Harper, W.
and Nesbitt, D.
(2001),
Fast Vibrational Relaxation of OH (Ņ=9) by Ammonia and Ozone, Chemical Physics Letters
(Accessed May 30, 2023)
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Fast Vibrational Relaxation of OH (Ņ=9) by Ammonia and Ozone
Published
Author(s)
S A. Nizkorodov, W W. Harper,
Abstract
Vibrational removal of OH(X2II) out of v=9 by 03 and NH3 has been studied in a flow cell flash-photolysis apparatus using high-resolutiondirect infrared absorption detection of OH in the v=11 <- 9 band. Removal of OH (v=9) by 03 occurs with a nearly gas-kinetic rate ( k 03 = 1.37(15)x10-10 cm3/S). Collisional removal by NH3 proceeds at an even faster rate (k NH3 =7.60(50)x10-10 cm3/S) that is two to threetimes higher than the hard-sphere collision limit, suggesting a resonant V-V energy transfer induced by long-range dipole-dipole interactions. A conservative upper limit of 5x10-14 cm3/s is placed on the relaxafion of OH(v=9) by argon.Citation
Chemical Physics Letters
Volume
341
Issue
No. 1-2
Pub Type
Journals
Keywords
hydroxyl ammonia, kinetics, ozone, resonant energy transfer, vibrational relaxation
Citation
Created May 31, 2001, Updated October 12, 2021