Abstract

Glass–ceramic nanocomposites comprising GdBr3/CeBr3 loaded sodium-aluminosilicate glasses in which scintillating crystallites are precipitated in situ from a host glass matrix were studied. This materials system shows promise as an alternative to single-crystal scintillators, with potential to be fabricated into a wide variety of sizes, shapes, and compositions. Batch compositions containing 15–18 mol. % GdBr3 and 3–4 mol. % CeBr3 were prepared and analyzed for photoluminescent light yield. Light yield peaked with rare-earth content of 15 mol. % GdBr3 and 4 mol. % CeBr3. Preliminary ceramization studies on this composition found that the precipitated phase more closely matched a Gd2O3-CeO2 mixture rather than the GdBr3(Ce) that was targeted.

© 2014 Optical Society of America

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