EVALUATION OF SNOW TRANSPARENCY BY USING A PHOTOSENSOR BASED ON THE Mn <sup>3+</sup>/Mn <sup>2+</sup> IN MgO
It is shown that the photosensitive system of Mn 3+/Mn 2+ impurity ions in ultradisperse MgO can be used for estimation of snow cover pollution and monitoring of the distribution of solar UV fluxes in the open, applying ESR detection.