OPTICAL CHARACTERIZATION OF Tb3+-DOPED Gd2O3 BASED SCINTILLATING GLASSES

Abstract

We prepared Tb 3+-doped Gd 2 O 3-based oxide glasses by high-temperature melting method and presented their density and optical characterization including transmission, emission and excitation spectra. Dependence of density and luminescence properties on the concentration of Tb 3+ and Gd 2 O 3 was also analyzed. The results show that rising Tb 3+ ions concentrations would lead to the reduction of distance between Tb 3+ ions, the increase of probabilities of energy resonate-transfer and a stronger luminous intensity. In addition, a high Gd 2 O 3 concentration was beneficial to improve the glass samples density, but exerting a negative effect on Tb 3+ ions and decreasing the luminous intensity of Tb 3+ ions.