[en] Photoinduced absorption anisotropy is investigated using silicate and phosphate glasses, irradiated with γ-quanta (5x10⁵-10⁶ R doses). It is shown that both in silicate and phosphate glasses the hole colour centers are anisotropic, and electron colour centers are isotropic

[en] Processes of destruction of color centers in alkaliborate glasses under influence of polarized optical radiation are studied. It is shown that impact of optical radiation on γ-coloured glasses results in destruction of all types of color centers under the study. The acting mechanism of color center destruction is determined by the type of the center excited by the given type of radiation. The destruction may take place as the result of electron center photoionization and recombination of released electrons with hole centers, as well as due to delocalization of 'holes' from hole centers and their subsequent recombination with the electrons of the electronic centers. 16 refs.; 5 figs

[en] Mechanism of photostimulated damage of radiation-induced defects in sodium silicate glasses with different Fe³⁺ content is ascertained. The glasses were subjected to gamma radiation with 10⁵-10⁷R doses at room temperature. It is shown that kinetics of radiation centers disintegration, taking place under the effect of radiation with kν=3.7eV, in sodium-silicate glasses, activated with Fe³⁺, is defined by excitation of hole centers and the following recombination of free holes with electron centers

[en] A study was made of anisotropy of absorption of hole colour centres appearing in sodium-silicate glass due to anisotropic action of UV radiation. In case of such action in the field of long-wave edge of their fundamental absorption oriented hole colour centres occurs with maximum of absorption bands to 2.0, 2.8, 4.1 eV. Principal direction of hole colour centres orientation in this case coincides with orientation of ionized glass matrix centres. Orientation of such kind is connected with selective ionization of disorderedly oriented centres forming edge of fundamental absorption. Value of guided dichroism of colour centres absorption is determined by hole migration

[en] The decay of color centers in alkali borate glasses exposed to polarized optical radiation is studied. Optical irradiation of γ-colored glasses is shown to destruct all types of color centers investigated. The mechanism of decay is defined by the type of color centers excited by a given type of radiation. Decay may be due either to photoionization of electron-type centers and subsequent recombination of the released electrons with hole-type centers or to delocalization of holes from hole-type centers and their subsequent recombination with electrons from electron-type centers

[en] Regularities of formation and destruction of radiation color centers (CC) of glasses in TeO₂-O₂O₅ system are investigated. It is shown that the absorption of the TeO₂-P₂O₅ system glasses appearing under the effect of UV and gamma radiation has a structuralless form. The photo- and thermoaction does not lead to CC selective decay. It is established that the CC are anisotropic. The CC absorption in glasses is annealed completely at 300 deg C