Journal of Sensors and Sensor Systems
Journal of Sensors and Sensor Systems
JSSS
Articles | Volume 15, issue 2
Articles | Volume 15, issue 2
https://doi.org/10.5194/jsss-15-141-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jsss-15-141-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 2
Regular research article
 | 
15 Jul 2026
Regular research article |  | 15 Jul 2026

Development and optimization of an OF-CEAS system for stable isotopic ratio analysis of methane (δ13C-CH4) in the mid-infrared

Cem Dinc, Ponkanok Nitzsche, Jens Goldschmidt, Christian Weber, Leonard Nitzsche, Katrin Schmitt, and Jürgen Wöllenstein

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Short summary
Methane plays an important role in global warming, and tracing its sources requires precise analysis of its isotopic fingerprint. In this study, we demonstrate the foundation of a system based on optical feedback cavity-enhanced absorption spectroscopy that achieves the stability needed for accurate isotope measurements. This work shows the potential of the method for future climate studies and environmental monitoring.
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