Optical absorption spectra of pulse irradiated oxide glasses.

Abstract

The pulse radiolysis technique was applied to sodium metaphosphate, alkali borate and Nabal glasses. In the sodium metaphosphate glass a transient peak around 2.0eV was observed. The transient peak disappears after 5μs following irradiation. In sodium borate glasses the intensity of the early stage spectra increases with increasing sodium oxide content. By resolving the observed spectra into Gaussian peaks, the relation between the intensity of the individual peak and composition was discussed. Generally, the composition dependence of the early stage spectra was similar to that of the permanent spectra by X-ray irradiation, reflecting the structure of borate glasses. In sodium glasses is also observed a tansient peak around 1.6eV whose intensity increases with increasing basicity. On the other hand in the glasses containing aluminium oxide the presence of the center which is associated with aluminium ion was deduced, whose life time is perhaps to be order of μs to ms.