A theory for the enhancement of the photoacoustic signals by volatile liquids

Srinivasan, J. ; Kumar, R. ; Gandhi, K. S. (1987) A theory for the enhancement of the photoacoustic signals by volatile liquids Applied Physics B: Lasers and Optics, 43 (1). pp. 35-41. ISSN 0946-2171

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Official URL: http://www.springerlink.com/content/k848x2736978n7...

Related URL: http://dx.doi.org/10.1007/BF00693970

Abstract

It has been shown experimentally that photoacoustic signals can be enhanced by introduction of a volatile liquid into the cell. Korpiun developed a theory which predicted the enhancement to be proportional to the mole fraction of the volatile component (γ0) in the gas phase. His theory is, however, based on a species conservation equation valid for dilute solutions only. We present a rigorous theory for predicting the enhancement of potoacoustic signal. Our theory shows the enhancement to be proportional to γ0/(1-γ0) which compares well with observations of Ganguly and Somasundaram.

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