Scintillation response of Lu.sub.3./sub.Al.sub.5./sub.O.sub.12./sub.:Pr.sup.3+./sup. single crystal scintillators

0385406 - FZÚ 2013 RIV NL eng J - Journal Article
Sreebunpeng, K. - Chewpraditkul, W. - Nikl, Martin - Mareš, Jiří A. - Nejezchleb, K. - Phunpueok, A. - Wanarak, C.
Scintillation response of Lu₃Al₅O₁₂:Pr³⁺ single crystal scintillators.
Nuclear Instruments & Methods in Physics Research Section B. Roč. 286, č. 9 (2012), 85-88. ISSN 0168-583X. E-ISSN 1872-9584
R&D Projects: GA ČR GA202/08/0893
Institutional research plan: CEZ:AV0Z10100521
Keywords : scintillator * LuAG:Pr * photoelectron yield * energy resolution * photofraction * light yield nonproportionality
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.266, year: 2012

We present the scintillation responses of Pr3+-doped Lu3Al5O12 single crystals grown by the Czochralski method with different Pr3+ concentration of 0.19, 0.31, and 0.43 mol% in the crystal. The light yield and energy resolution were measured using photomultiplier tube (XP5200B PMT) readout. High light yield of 15,900 photons per MeV and an energy resolution of 6.5% for 662 keV c-rays (137Cs source) were obtained with the LuAG:Pr (0.19%) crystal. The variation of light yield and energy resolution with praseodymium concentration was also observed. The light yield non-proportionality and energy resolution versus c-ray energy were measured and the intrinsic resolution was calculated after correcting the measured energy resolution for PMT statistics. Very good proportionality of the light yield was found within 5% over the energy range from 1274.5 keV down to 32 keV.
Permanent Link: http://hdl.handle.net/11104/0214663