Diagnostics of gas mixtures with fluctuating temperature, density and concentration composition requires simultaneous detection of spectra of all species of a mixture with subsequent its joint treatment. Strategy of processing of experimental data, obtained at diagnostics by methods of a spectroscopy of Coherent Anti-Stokes Raman Scattering, is considered. An experimental approach to a performance of density numbers measurements in three-component mixture of O2, H2, H2O in a flame of oxygen-hydrogen burner is presented.
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