On Passage Coefficient of Optically Transparent Dielectrics in UV Spectrum Region

Optical properties of a number of crystals - leukosapphire of quartz, fluorides of calcium and barium - are experimentally studied within the spectral region of λ = 110...250 nm in their close contact with the strongly radiating gas and plasma medium. The wide band ultraviolet radiation with the power density I₀ ~ 4x10⁷ Wt/cm² has been generated by the light erosion and plasma dynamical injectors in vacuum and in gases of various chemical compositions. A possibility of the effective transportation of the powerful ultra violet radiation flows through the specified materials is shown under conditions of creating near their surface a gas layer which is optically dense for the short wave radiation.