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.