The possibility of measuring the concentration of alkane molecules – methane, ethane, propane, butane, pentane, and hexane – at the maximum permissible concentration (MPC) and higher (with concentrations in the range from 4∙1014 to 1017 cm−3) by a Raman lidar with optimal parameters in the synchronous photon counting mode in the atmospheric boundary layer at altitudes up to 1.5 km is estimated. It has been shown that with the Raman lidar operating at a wavelength of 532 nm, the concentrations of all examined molecules in the atmosphere can be detected on the MPC level: methane can be detected in the entire sensing range up to 1500 m, ethane up to 767 m, propane up to 941 m, butane up to 707 m, pentane up to 518 m, and hexane up to 185 m for a measurement time of 10 s.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 157–164, February, 2022.
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Privalov, V.E., Shemanin, V.G. Raman Lidar Sensing of Saturated Hydrocarbon Molecules in the Atmospheric Boundary Layer. Numerical Modeling. Russ Phys J 65, 365–374 (2022). https://doi.org/10.1007/s11182-022-02644-y
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DOI: https://doi.org/10.1007/s11182-022-02644-y