Scintillation from Eu2+ in Nanocrystallized Glass

A Eu 2+ -doped SiO 2 ―Al 2 O 3 ―CaO―CaF 2 glass was prepared and converted into a transparent glass ceramic by heat treatment. The crystalline phase and its size were determined by X-ray diffraction and a transmission electron microscopy. The scintillation of Eu 2+ ions in both glass and ceramic under X-ray excitation was investigated and compared with that in a single-crystal scintillator.