"Scintillation and Spectroscopic Properties of Ce3+-doped YAlO3 and Lux(RE)1-x AlO3 (RE=Y3+ and Gd3+) Scintillators"

Scintillation properties like photoelectron yield and light yield of Ce3+-doped YAlO3 and mixed Lu x(RE)1- xAlO3 (RE=Y3+ and Gd3+) perovskite crystals are presented. The photoelectron yields increase almost linearly with g-ray energy but a small non-linearity is observed around 40 keV. Scintillation and spectroscopic properties like UV or X-ray excited emission, laser excited emission, excitation and absorption spectra and photo- and scintillation decay of the different crystals are compared. The influence of intrinsic absorption and reflecting tape on the yields are discussed. Selected YAlO3:Ce showed the highest light yield of 25,000 phels/MeV and an energy resolution of 4.5% for 662 keV -radiation. The -ray linear absorption coefficient increases with Lu content and that of LuAlO3:Ce is almost 10 times higher than that of YAlO3:Ce.