Scintillation properties of Gd.sub.3./sub.Al.sub.2./sub.Ga.sub.3./sub.O.sub.12./sub.:Ce.sup.3+./sup. single crystal scintillators

0432502 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
Sakthong, O. - Chewpraditkul, W. - Wanarak, C. - Kamada, K. - Yoshikawa, A. - Průša, Petr - Nikl, Martin
Scintillation properties of Gd₃Al₂Ga₃O₁₂:Ce³⁺ single crystal scintillators.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 75, Jul (2014), 1-5. ISSN 0168-9002. E-ISSN 1872-9576
Grant CEP: GA ČR GAP204/12/0805
Institucionální podpora: RVO:68378271
Klíčová slova: energy resolution * GAGG:Ce * light yield * photofraction * scintillation detectors
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.216, rok: 2014

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.
Trvalý link: http://hdl.handle.net/11104/0236840