The report discusses the results of experiments on the registration of backscattering of IR radiation from various aerosol formations. The studies were conducted on the bench for prototyping lidar measurements at a controlled route. Water and solutions in water of tryptophan, salt, alcohol, glycerin, and reduced nicotinamide adenine dinucleotide (NADH) served as model media. For the experiments, the stand was upgraded with an IR radiation source – a tunable waveguide CO2 laser, and an IR receiver – cooled with liquid nitrogen MCT. As a result of the experiments, the ability to discriminate a number of aerosols among themselves by changes in the absorption spectrum during laser wavelength tuning along the lines of a CO2 laser, which can be used in remote laser sensing, was determined.
In the report the results of experiments on the registration of IR radiation backscattering from organic aerosol are presented and discussed. The studies were conducted on the bench for prototyping lidar measurements at a controlled optical way. Water aerosol and water aerosol containing organic components like tryptophan, alcohol, glycerin, and reduced nicotinamide adenine dinucleotide (NADH) served as model media. For these experiments we have modified the experimental set up under replacing UV laser on IR one -- a tunable waveguide CO2- laser. The IR photodetector MCT cooled by liquid nitrogen was used. As a result of the study, the ability to discriminate a number of aerosols among themselves by difference of the absorption spectra under CO2- laser wavelength tuning was demonstrated. It can be used in remote sensing of the different types of organic aerosols.
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