Articles | Volume 12, issue 1
https://doi.org/10.5194/jsss-12-37-2023
https://doi.org/10.5194/jsss-12-37-2023
Regular research article
 | 
25 Jan 2023
Regular research article |  | 25 Jan 2023

Resonant photoacoustic cells for laser-based methane detection

Katrin Schmitt, Mara Sendelbach, Christian Weber, Jürgen Wöllenstein, and Thomas Strahl

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Cited articles

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We present a photoacoustic sensor enabling fast, inexpensive, and highly sensitive methane detection in environmental monitoring applications. Six different T-cell designs were both theoretically and experimentally investigated. The aim was to understand the photoacoustic signal generation and resonances in relation to the different cell geometries, and determine the long-term stability and the detection limits for methane. These were below the methane background concentration in air of 1.8 ppm.