Author/Authors :
Mares، نويسنده , , J.A. and Nikl، نويسنده , , M and Solovieva، نويسنده , , N and D’Ambrosio، نويسنده , , C and de Notaristefani، نويسنده , , F and Blazek، نويسنده , , K and Maly، نويسنده , , P and Nejezchleb، نويسنده , , K and Fabeni، نويسنده , , P and Pazzi، نويسنده , , G.P and de Haas، نويسنده , , J.T.M and van Eijk، نويسنده , , C.W.E and Dorenbos، نويسنده , , P، نويسنده ,
Abstract :
Scintillation properties like photoelectron yield and light yield of Ce3+-doped YAlO3 and mixed Lux(RE)1−xAlO3 (RE=Y3+ and Gd3+) perovskite crystals are presented. The photoelectron yields increase almost linearly with γ-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 γ-radiation. The γ-ray linear absorption coefficient increases with Lu content and that of LuAlO3:Ce is almost 10 times higher than that of YAlO3:Ce.
Keywords :
Spectroscopic properties , YAlO3:Ce and Lux(RE)1-xAlO3:Ce scintillators , Scintillation , Photoelectron yield , Light yield
