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Photoacoustic detection of acetone in N2 and synthetic air using a high power UV LED

Weigl, Stefan ; Feldmeier, Florian ; Bierl, Rudolf ; Matysik, Frank-Michael


The performance of a photoacoustic trace gas sensor for the detection of acetone in N-2 and synthetic air is reported. The sensor system utilises an amplitude modulated UV LED. The light source has an emission maximum at 278 nm and a maximum CW output power of 300mW according to the datasheet. Three different collimating and focusing approaches have been investigated to guide the highly divergent ...


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