Scintillation properties of Sc-, Pr-, and Ce-doped LuAG epitaxial garnet films

被引：9
|
作者：
Prusa, P. [1 ]
Kucera, M. [2 ]
Mares, J. A. [1 ]
Nikl, M. [1 ]
Nitsch, K. [1 ]
Hanus, M. [2 ]
Onderisinova, Z. [2 ]
Cechak, T. [3 ]
机构：
[1] AS CR, Vvi, Inst Phys, CZ-16200 Prague, Czech Republic
[2] Charles Univ Prague, Fac Math & Phys, CZ-12116 Prague, Czech Republic
[3] Czech Tech Univ, Fac Nucl Engn & Phys Sci, CZ-11519 Prague, Czech Republic
来源：
JOURNAL OF CRYSTAL GROWTH | 2011年 / 318卷 / 01期
关键词：
Energy resolution; Photoelectron yield; Liquid phase epitaxy; LuAG:Pr; Sc codoped material; Scintillator materials; LUMINESCENCE; CRYSTALS; YAG;
D O I：
10.1016/j.jcrysgro.2010.10.046
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Lu3Al5O12 (LuAG) films were grown from the BaO-B2O3-BaF2 flux on LuAG and YAG substrates using the liquid phase epitaxy method (LPE). They were doped with Pr3+, Sc3+, and eventually still with Ce3+ ions. Photoelectron yield, its time dependence, and energy resolution were measured under alpha-particle excitation. A sample of the Czochralski-grown bulk LuAG:Pr single crystal was measured as a reference. The best performing epitaxial films had low Sc3+ concentration and appeared comparable or superior to the Czochralski-grown crystal in terms of photoelectron yield and relative intensity of the fast component of scintillation response. High concentration of Sc3+ ions results in slowdown of response and lower photoelectron yield. Some samples with lower photoelectron yield than that of the Czochralski-grown crystal did exhibit better energy resolution. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：545 / 548
页数：4
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