Scintillation yield enhancement in LuAG:Pr crystals following thermal annealing

被引：17
作者：
Drozdowski, W. [1 ]
Brylew, K. [1 ]
Chruscinska, A. [1 ]
Kamada, K. [2 ,3 ]
Yanagida, T. [3 ]
Yoshikawa, A. [3 ]
机构：
[1] Nicholas Copernicus Univ, Inst Phys, Div Optoelect, PL-87100 Torun, Poland
[2] Furukawa Co Ltd, Mat Res Lab, Tsukuba, Ibaraki 3050856, Japan
[3] Tokohu Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
OPTICAL MATERIALS | 2012年 / 34卷 / 12期
关键词：
LuAG; Praseodymium; Scintillator; Scintillation yield; Thermoluminescence; Czochralski method; ELECTRON TRAPS; LUMINESCENCE;
D O I：
10.1016/j.optmat.2011.11.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of thermal annealing in various atmospheres of Czochralski-grown Lu3Al5O12:Pr (LuAG:Pr) crystals on their scintillation yield and energy resolution are discussed. It is shown that annealing in argon, air, or oxygen at 1373 K for 48 h is a simple way of achieving a ten-odd percent increase of yield together with an improvement of energy resolution. High temperature thermoluminescence measurements indicate significant reductions of trap concentrations in the annealed crystals compared to the "as grown" ones, which correlates well with the observed yield increase. A simple model is proposed to predict further available yield enhancement in LuAG:Pr upon thermal annealing. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1975 / 1978
页数：4
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