Ganguly, P and Somasundaram, T (1983) A Novel Technique For Enhancing Photo-Acoustic Signals From Solids. In: Applied Physics Letters, 43 (2). 160 -162.
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Enhancement of the photoacoustic signal from condensed materials by several folds is achieved by the introduction of a liquid with high vapor pressure in the photoacoustic cell. The enhancement is especially marked for low absorption coefficients and high chopping frequencies. Typically the enhancement is two to nine times in the presence of diethyl ether at 293 K. A linear relationship is observed between the enhancement and the vapor pressure of the liquid.
|Item Type:||Journal Article|
|Additional Information:||copy right of this article belongs to American Institute of Physics.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||06 Feb 2010 10:27|
|Last Modified:||19 Sep 2010 05:37|
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