Luminescence and scintillation of Ce³⁺‐doped oxide glass with high Gd₂O₃ concentration

Abstract

Abstract Ce 3+ ‐doped oxide glass with high Gd 2 O 3 (30 mol%) concentration was prepared as a scintillating glass under CO reducing atmosphere. A dominant emission band of the Ce 3+ 5d → 4f transition peaking around 400 nm was observed in the photo‐ and radioluminescence (PL, RL) spectra. PL decay was governed by a few tens of nanoseconds decay time. The integral scintillation efficiency of about 30% of the Bi 4 Ge 3 O 12 scintillator was observed as well. It exhibits a light yield of about 910 photons/MeV with an energy resolution of 18.3% (FWHM) in the pulse height spectrum of 662 keV γ‐rays from a 137 Cs source.