X-ray-induced Luminescence Properties of Eu-doped Alkaline Earth Borate Glasses

The photoluminescence and scintillation properties of Eu-doped (0.1, 1, 5, and 10 mol%) CaO-Al 2 O 3 -B 2 O 3 glasses were investigated.The photoluminescence spectra showed sharp emission peaks at ~600 nm owing to the 4f-4f transitions of Eu 3+ .The X-ray-induced scintillation spectra were also similar to those observed in photoluminescence.The photoluminescence quantum yield reached 96% in the 10% Eu-doped sample.The photoluminescence and X-ray-induced scintillation decay curves were clearly observed, and the decay time constants were of 1 ms order.