U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Fast Vibrational Relaxation of OH (v=9) By Ammonia and Ozone

Published

Author(s)

S A. Nizkorodov, W W. Harper, David Nesbitt

Abstract

Vibrational relaxation of OH(X2II) in the Ņ=9 state by O3 and NH3 has been studied via flash-photolysis using high-resolution direct infrared absorption detection of OH in the Ņ= 11 <- 9 band. OH (nu = 9) removal by O3 occurs with a nearly gas-kinetic rate (ko, = 1.37 (15) x 10-10 cm3/s). Collisional removal by NH3 (KNH3 = 7.60(50) x 10-10 cm3/s) is two to three times higher than the hard-sphere collision limit, suggesting a resonant V-V energy transfer induced by long-range dipole-dipole interactions. An upper limit of 5 x 10-14 cm3/s is placed on OH(nu = 9) vibrational relaxation by argon.
Citation
Chemical Physics Letters
Volume
341
Pub Type
Journals

Keywords

hydroxyl ammonia, kinetics, ozone, resonant energy transfer, vibrational relaxation

Citation

Nizkorodov, S. , Harper, W. and Nesbitt, D. (2001), Fast Vibrational Relaxation of OH (v=9) By Ammonia and Ozone, Chemical Physics Letters (Accessed May 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created May 31, 2001, Updated October 12, 2021