Gamma ray interaction with soda lime silicate glasses doped with V2O5, CuO or SrO

Soda lime silicate glasses doped with one of these metal oxides: vanadium oxide, copper oxide, or strontium oxide were synthesized by high-temperature melting technique. Spectroscopic, physical and optical properties were investigated for glass samples with and without the effect of gamma irradiation at doses of 25 and 50 kGy. Absorption spectra of FTIR analysis for the samples show characteristic bands for main silicate units. In addition, FTIR analysis illustrated the stability of the glass network after gamma irradiation. The UV-Vis spectra showed absorption bands characteristic of different metal oxides in their various oxidation states in accordance with the host glass studied. Silicate groups have been found to prefer V5+ that appears at 245 and 335 nm. While in the case of copper doping, a peak at 313 nm is observed for Cu+ beside a broad peak extending from 600 to 900 nm for Cu2+. New defects for silicate groups at 227 and 280 nm have been appeared by adding SrO. After gamma irradiation, new defects have been observed besides some changes in the doping valences. Deconvolution of FTIR and UV spectra has been illustrated to define the overlapped peaks. Defect centers induced by ionizing gamma irradiation of glass samples have been elucidated by ESR spectroscopy. The spectrum reveals V4+ and V3+ hyperfine structures, which are well resolved. Nevertheless, the ESR spectrum shows an asymmetric line shape characteristic of a tetragonally elongated octahedral site with copper oxide-doped glass. New applicable trends for soda lime silicate glasses have been suggested in the radiation field.

Automated summary

Soda lime silicate glasses doped with metal oxides were synthesized and their optical and physical properties as well as the effect of gamma irradiation were investigated. The FTIR analysis showed characteristic bands for silicate units, while UV-Vis spectra revealed absorption bands of different metal oxides. After gamma irradiation, changes in the glass network stability and the appearance of new defects were observed. ESR spectroscopy elucidated the defect centers induced by ionizing gamma irradiation.