Abstract

A method is described which allows a single-pulse analysis of photoacoustic signals. Isotope specific excitation of D2S and HDS is performed with a TEA CO2 laser, and the concentration change of the two species caused by H-D exchange after fast mixing of H2S and D2S is monitored. No influence of the laser radiation on the exchange reaction could be detected. Thus the progress of an independent chemical reaction was analyzed by a concentration measurement. The time resolutions is determined by the repetition rate of the laser.

© 1982 Optical Society of America

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