CO2 laser photoacoustic spectroscopy and absolute absorption coefficients of short chain saturated fatty acid vapours

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Wageningen Agricultural Univ, Wageningen, Netherlands [1 ]
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Instrum Sci Technol | / 2-3卷 / 189-202期
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Absorption coefficients;
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摘要：
A resonant photoacoustic cell, capable of contamination free operation at temperatures above that of the ambient, was constructed and used to determine absolute absorption coefficients of C6:0 (hexanoic) and C8:0 (octanoic) fatty acid vapours at CO2 laser wavelengths. At atmospheric pressure, the maximum absorption coefficients at the 9R(32) line of the CO2 laser (1085.77 cm-1) are 8.0 atm-1 cm-1 (C6:0 at 332 K) and 8.9 atm-1 cm-1 (C8:0 at 342 K).
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