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Influence of gamma -irradiation on the photoluminescent properties of porous glasses.

Gevelyuk S.A., Lishchuk D.E., Mak V.T., Rysiakiewicz-Pasek E., Marczuk K.

Optica Applicata

2000

Vol. 30, nr 4

595-603

The influence of small doses of gamma -irradiation on the features of the photoluminescence spectra of porous silica glass during long-time (several months) storage after the irradiation is investigated. The non-monotonic dependence of photoluminescence change on the dose of the glasses with a different composition and different additional pre-treatment is observed. The analysis of intensity changes and shifts of the maxims of the photoluminescence spectra shows long-time oscillations. This indicates that the composite catalytic processes take place on the surface of the pores. Perhaps the small gamma -radiation doses initiate the cyclic process of the surface state transformation on the inner side of the pores.