硅酸盐玻璃辐照后的光吸收和电子自旋共振研究

Optical and ESR Studies of γ-irradiated Silicate Glasses

近年来,随着原子能工业和电子工业的发展,用于高能辐射环境中的玻璃愈来愈引起材料科学家们的重视,对其耐辐射和防辐射等性能的要求也愈来愈高。因而。

The ESR and optical absorption spectra of γ-irradiated silicate glasses were studied by means of introducing TiO2 and Si powder into glasses. On the basis of experimental results, the corresponding correlation between different types of defect centers and induced optical absorption bands, as well as induced ESR lines have been found out.As a kind of strong reducing reagent, silicon powder could remove the γ-induced visible optical absorption of silicate glasses markedly. The concentration of color centers in silicate glass was mainly dominated by that of trapped-hole centers. In addition, it was found that to some extent the induced absorption at 620nm could be reduced by Ti3+ ions in glass.