Abstract
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 391nm. 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 0.5mol%of CeF3. For the same concentration the decay time was obtained to be 19.7ns and their mean critical distance was calculated about 22.33Å. The observed decay constants revealed that direct electron-hole capture was a dominant scintillation process in the present glass matrix.
Published Version
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