Author/Authors :
Sakthong، نويسنده , , Ongsa and Chewpraditkul، نويسنده , , Weerapong and Wanarak، نويسنده , , Chalerm and Kamada، نويسنده , , Kei and Yoshikawa، نويسنده , , Akira and Prusa، نويسنده , , Petr and Nikl، نويسنده , , Martin، نويسنده ,
Abstract :
The scintillation properties of Gd3Al2Ga3O12:Ce3+ (GAGG:Ce) single crystals grown by the Czochralski method with 1 at% cerium in the melt were investigated and results were compared with so far published results in the literature. The light yield (LY) and energy resolution were measured using a XP5200B photomultiplier. Despite about twice higher LY for GAGG:Ce, the energy resolution is only slightly better than that of LuAG:Ce due to its worse intrinsic resolution and non-proportionality of LY. The LY dependences on the sample thickness and amplifier shaping time were measured. The estimated photofraction in pulse height spectra of 320 and 662 keV γ-rays and the total mass attenuation coefficient at 662 keV γ-rays were also determined and compared with the theoretical ones calculated using the WinXCom program.
Keywords :
Energy resolution , GAGG:Ce , Light yield , Photofraction , Scintillation detectors
