Abstract
The two-optical path laser-induced fluorescence (TOPLIF) method was used to measure OH concentration profiles in flat, stoichiometric, premixed, methane–air flames burning at pressures ranging from 1 to 9 bars. The TOPLIF method does not require knowledge of the collisional quenching rates, which is a major advantage especially at these pressures. The population of a single rovibronic level is measured in a manner similar to many spectroscopic methods. TOPLIF measures this population at any location in flames at any pressure relative to this level’s population in an arbitrary reference flame (here the 1-bar flame at 5 mm above the burner). Absolute values can therefore be obtained from the known value in the reference flame. In addition, the TOPLIF method is proposed as a technique to process standard laser-saturated fluorescence measurements. Using our approach, we can properly correct variations in the effective probe volume with pressure.
© 1992 Optical Society of America
Full Article | PDF ArticleMore Like This
P. Desgroux and M. J. Cottereau
Appl. Opt. 30(1) 90-97 (1991)
Frank C. Bormann, Tim Nielsen, Michael Burrows, and Peter Andresen
Appl. Opt. 36(24) 6129-6140 (1997)
Campbell D. Carter, Galen B. King, and Normand M. Laurendeau
Appl. Opt. 31(10) 1511-1522 (1992)