33000 photons per MeV from mixed (Lu0.75Y0.25)3Al5O12: Pr scintillator crystals

被引：48
作者：
Drozdowski, Winicjusz [1 ]
Brylew, Kamil [1 ]
Wojtowicz, Andrzej J. [1 ]
Kisielewski, Jaroslaw [2 ]
Swirkowicz, Marek [2 ]
Lukasiewicz, Tadeusz [2 ]
de Haas, Johan T. M. [3 ]
Dorenbos, Pieter [3 ]
机构：
[1] Nicolaus Copernicus Univ, Inst Phys, Fac Phys Astron & Informat, PL-87100 Torun, Poland
[2] ITME, PL-01919 Warsaw, Poland
[3] Delft Univ Technol, Luminescence Mat Res Grp, Fac Sci Appl, NL-2629 JB Delft, Netherlands
来源：
OPTICAL MATERIALS EXPRESS | 2014年 / 4卷 / 06期
关键词：
ELECTRON TRAPS; CE3+;
D O I：
10.1364/OME.4.001207
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(LuxY1-x)(3)Al5O12:Pr (x = 0.25, 0.50, 0.75) crystals have been grown by the Czochralski method and their scintillation properties have been examined. Compared to the well-respected LuAG:Pr scintillator, which has so extensively been studied in the recent years, the new mixed LuYAG:Pr crystals display markedly higher light yields, regardless of the value of x. In particular, (Lu0.75Y0.25)(3)Al5O12:0.2% Pr characterized by a yield of 33000 ph/MeV, an energy resolution of 4.4% (at 662 keV), and a density of 6.2 g/cm(3), seems to be an ideal candidate to supercede Lu3Al5O12:0.2%Pr (19000 ph/MeV, 4.6%, 6.7 g/cm(3)) in various applications. The observed enhancement of light output following the partial substitution of lutetium by yttrium is most probably related to some specific differences in distributions of shallow traps in particular materials. (C)2014 Optical Society of America
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页码：1207 / 1212
页数：6
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