Abstract
We report the first use to our knowledge of the anomalous fluorescence of pyrene to determine flame temperature. Vapor-phase pyrene was injected into fuel-rich ethylene/oxygen flames at 80 Torr. The relative laser-induced (S2 → S0)/(S1 → S0) emission was monitored as a function of height above the burner and compared with the temperature profile as measured by thermocouples and sodium D-line reversal. The agreement between the ratioing technique and the flame-temperature profile demonstrates the potential of the method.
© 1986 Optical Society of America
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