Szukana fraza: [Abstrakt = "The structure of high\-silica porous glasses and quartz\-like \(Vycor type\) glasses has been investigated by transmission and scanning electron microscopy and by electron micro\-probe analysis. Porous glasses \(PGs\) have been manufactured by acid leaching of phase\-separated alkali borosilicate glass plates. To obtain the quartz\-like glasses the PG samples were sintered at different temperatures up to 900°C. Before sintering a part of PGs was impregnated with salt solutions containing Ag. Features of the structure of quartz\-like glass matrix are revealed. The parameters and arrangement of a photosensitive Ag\-Hal phase in photochromic quartz\-like glasses are determined."]

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