Scintillation and luminescence characteristics of Ce3+doped in Li2O-Gd2O3-BaO-B2O3 scintillating glasses

Ce3+ activated Li2O-Gd2O3-BaO-B2O3glass scintillator containing neutron-capture elements (7Li, 11Band 158Gd)were developed by conventional melt-quenching technique. Luminescence spectra under UV and X-ray excitation showed Ce3+ion emission due to 5d→4f transition at 391 nm. Energy transfer from the host glass to Ce3+ions were confirmed by VUV-UV and XEL spectra. The highest emission intensity of Ce3+ions were observed at 0.5 mol%of CeF3. For the same concentration the decay time was obtained to be 19.7 ns and their mean critical distance was calculated about 22.33 Å. The observed decay constants revealed that direct electron-hole capture was a dominant scintillation process in the present glass matrix.