Abstract
Data are reported for the first known application of picosecond laser spectroscopy to the measurement of collisional quenching rates by time-resolved laser-induced fluorescence in flames. Collisional quenching rates are important for the determination of species concentrations by laser-induced fluorescence. The collisional quenching lifetime following excitation of the R2(4) A2Σ+ (υ′ = 0) ← X2Π (υ″ = 0) transition was measured to be 1.8 nsec in the burned-gas region of an atmospheric-pressure, premixed methane–air flame.
© 1983 Optical Society of America
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