Abstract

We report a developing technique capable of making continuous time-series measurements of naturally occurring minor-species concentrations. The high repetition rate of the mode-locked laser used in this technique allows for the study of transient combustion events, such as turbulence, and their effect on minor-species concentrations. The technique is applied to make CH fluorescence time-series measurements and to calculate power spectral densities in a turbulent nonpremixed flame. To our knowledge, the reported time series represents the first such measurement for a naturally occurring minor species in a turbulent flame.

© 1997 Optical Society of America

Measurements of hydroxyl concentrations and lifetimes in laminar flames using picosecond time-resolved laser-induced fluorescence

Thomas A. Reichardt, Michael S. Klassen, Galen B. King, and Normand M. Laurendeau
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Two-point time-series measurements of minor-species concentrations in a turbulent nonpremixed flame

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Quantitative hydroxyl concentration time-series measurements in turbulent nonpremixed flames

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Two-point time-series measurements of hydroxyl concentration in a turbulent nonpremixed flame

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Photon-counting technique for rapid fluorescence-decay measurement

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Opt. Lett. 23(15) 1215-1217 (1998)