Abstract

C₂ may play an important role in soot formation in some flames and is a major species in acetylene combustion chemistry. In this Letter the technique of intracavity spectroscopy has been combined with a simple tomographic analysis to measure spatially resolved C₂-concentration profiles in an oxyacetylene flame. We find that ground-state and excited-state C₂ are located in the same region of the flame, suggesting that conditions required for their formation are the same. Our results indicate that the C₂ concentration in the mantle region is close to its equilibrium value.

© 1981 Optical Society of America

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