Abstract
In the paper the results of experimental researches of parameters of a laser beam passed through a convective column shaped above a zone of shining wood materials have been shown. Estimates of structural characteristics of temperature fluctuations C<SUB>(Tau</SUB> )<SUP>2</SUP> and refractive index C<SUB>n</SUB><SUP>2</SUP> determined from measurements of temperature gradients at the altitude 105 cm have been presented. The root-mean-square deviations of fluctuations of the image of a divergent laser beam measured are compared with ones calculated on C<SUB>n</SUB><SUP>2</SUP> taking into account profile of temperature in the convective column. The spectra of fluctuations of the image and intensity of a divergent laser beam have been determined also. It is shown that the turbulent parameters in a convective column since some altitude corresponds to conditions of a free convection.
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