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Photoacoustic detection of OH molecules in a methane–air flame

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Abstract

Pulsed photoacoustic signals from OH molecules in a methane–air flame have been observed. Quantitative measurements are made and compared with the results of a theoretical model. Very good agreement between theory and experiment is obtained. A detection sensitivity of 250 ppb for OH molecules in a combustion environment has been obtained.

© 1984 Optical Society of America

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