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18 December 2019 Optimization of the construction of non-resonant photo-acoustic cell to expand the dynamic range of measurements of the gas impurities concentration in the atmosphere
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Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1120809 (2019) https://doi.org/10.1117/12.2540403
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation
Abstract
In this paper, various designs of non-resonant photoacoustic cells with a different arrangement of microphones are investigated. It is demonstrated that it is possible to expand the dynamic range of measurement of gas concentration using the special configuration of cell cavities and the specific location of the microphone. The suppression of resonant acoustic effects occurring in the measuring photoacoustic cell is characteristic of this cell cavity design. Given this suppression, only the primary sound wave affects the microphone diaphragm. The implementation of a new cell design allows us to extend the range of measurement of SF6 gas impurity concentration in the atmosphere from 100 - 1000 ppm up to 10 - 10,000 ppm.
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Anna V. Boikova, Aleksandr I. Karapuzikov, Aleksey A. Markelov, Maksim B. Miroshnichenko, and Maxim Y. Shtyrov "Optimization of the construction of non-resonant photo-acoustic cell to expand the dynamic range of measurements of the gas impurities concentration in the atmosphere", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1120809 (18 December 2019); https://doi.org/10.1117/12.2540403
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