Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1885727 | Radiation Physics and Chemistry | 2017 | 6 Pages |
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 5dâ4f transition at 391Â 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 0.5Â mol%of CeF3. For the same concentration the decay time was obtained to be 19.7Â ns and their mean critical distance was calculated about 22.33Â Ã
. The observed decay constants revealed that direct electron-hole capture was a dominant scintillation process in the present glass matrix.
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Authors
F. Zaman, G. Rooh, N. Srisittipokakun, H.J. Kim, E. Kaewnuam, P. Meejitpaisan, J. Kaewkhao,