Abstract
The construction and principle of operation of a imaging Fourier transform infrared spectroradiometer (FTIR spectrometer) equipped with a cooled 32-area photodetector designed for spectral analysis of open atmospheric paths are considered. The main technical characteristics of the Fourier spectrometer are reported. The technique of visualization of the detected vapor cloud is described. The results of field experiments using the imaging FTIR spectrometer are shown. Based on these results, the dynamics of motion of the cloud of material has been investigated, its angular and linear velocities have been estimated, and data on propagation of the cloud of material and change in its angular sizes in air have been obtained. A technique for analyzing data provided by two FTIR spectrometers is given, based on which one can estimate the size of the cloud and the distance to it from each device. It is shown that the results of detection of the cloud of material by the imaging FTIR spectrometer can be used to predict the propagation of material under study in space.
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Original Russian Text © S.V. Bashkin, A.O. Karfidov, V.N. Kornienko, M.V. Lel’kov, A.I. Mironov, A.N. Morozov, S.I. Svetlichnyi, S.E. Tabalin, I.L. Fufurin, 2016, published in Optika i Spektroskopiya, 2016, Vol. 121, No. 3, pp. 485–491.
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Bashkin, S.V., Karfidov, A.O., Kornienko, V.N. et al. An imaging Fourier transform spectroradiometer with a multi-element photodetector for the spectral range of 7–14 μm. Opt. Spectrosc. 121, 449–454 (2016). https://doi.org/10.1134/S0030400X16090058
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DOI: https://doi.org/10.1134/S0030400X16090058