Abstract
Scintillation properties associated with intrinsic lattice defects of undoped Y3A5O12 (YAG) and Lu3A5O12 (LuAG) transparent ceramics and single crystals are compared. The ceramics excited with X-ray demonstrated relatively low emission intensity when compared with that of the single crystals. Decay times of the ceramics and the single crystals were similar. These parameters were approximately 430ns (YAG ceramic), 460ns (YAG single crystal), 30ns and 1090ns (LuAG ceramic), and 25ns and 970ns (LuAG single crystal). According to the pulse height spectra recorded under 137Cs gamma-ray irradiation, the scintillation light yield of the both ceramics were about 2950±290ph/MeV. However, the single crystals had greater kight yield of about about 14,300±1430ph/MeV for YAG and 8350±830ph/MeV for LuAG.
Published Version
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