Accession Number : ADB085773
Title : Rotational-Vibrational Level Relaxation Effects on Laser-Induced Fluorescence Number Density Measurements of Hydroxide in a Combustion Environment. II. Effects on Vibrational Level Populations.
Descriptive Note : Interim technical rept. Oct 81-Dec 82,
Corporate Author : DAYTON UNIV OH RESEARCH INST
Personal Author(s) : Campbell,D. H.
Report Date : NOV 1983
Pagination or Media Count : 49
Abstract : A full vibrational-rotational level rate equation model has been used to investigate the application of laser-induced fluorescence techniques to number density measurements of hydroxide in a combustion environment. The extent of deviation of the population in the laser-pumped vibrational level from the two-level model prediction, due to collisional exchange mechanisms, was investigated for a range of pressures, temperatures, laser powers, and collisional exchange rates. For accurate number density measurement using wide bandwidth detection, it was determined that lower laser intensities are required at all pressures. (Author)
Descriptors : *Laser induced fluorescence, *Relaxation, *Molecular rotation, *Molecular vibration, Combustion, Hydroxides, Environments, Density, Mathematical models, Collisions, Exchange, Laser pumping, Pressure, Low intensity, Broadband
Subject Categories : Lasers and Masers
Atomic and Molecular Physics and Spectroscopy
Nuclear Physics & Elementary Particle Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE