We examined basic luminescence properties and radiation response of sodium borate glass scintillators activated with Pb2+, Cu+, Ti4+, V5+, W6+ and Yb3+ ions, respectively. These glasses had more than 80% transparency for emission wavelength range, and strong absorption bands due to the charge transition of the ions were observed. In the photoluminescence spectra, all glasses demonstrated intense emission peak in visible region, which are corresponding to the ions with s2 (Pb2+), d10 (Cu+) and d0 (Ti4+, V5+, W6+) configuration. Additionally charge transfer emission was observed in Yb 3+-doped glass. When 241Am 5.5 MeV alpha-ray excited the glasses, they showed weak emission intensity because of low energy transfer efficiency from host lattice to emission center. By 241Am irradiated pulse height spectra, Cu+-doped glass demonstrated the highest scintillation output in the glasses.
- Sodium borate