Luminescence and light yield of (Gd2Y)( Ga3Al2) O12: Pr3+ single crystal scintillators

被引：3
|
作者：
Lertloypanyachai, Prapon [1 ,2 ]
Pathumrangsan, Nichakorn [2 ]
Sreebunpeng, Krittiya [6 ]
Pattanaboonmee, Nakarin [1 ]
Chewpraditkul, Weerapong [1 ]
Yoshikawa, Akira [3 ,4 ]
Kamada, Kei [4 ]
Nikl, Martin [5 ]
机构：
[1] King Mongkuts Univ Technol Thonburi, Fac Sci, Bangkok 10140, Thailand
[2] Muban Chombueng Rajabhat Univ, Ratchaburi 70150, Thailand
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[4] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 9808579, Japan
[5] AS CR, Inst Phys, Cukrovarnicka 10, Prague 16253, Czech Republic
[6] Chandrakasem Rajabhat Univ, Bangkok 10900, Thailand
来源：
JOURNAL OF CRYSTAL GROWTH | 2017年 / 468卷
关键词：
(Gd2Y)( Ga3Al2) O-12: Pr; Photoelectron yield; Luminescence; Scintillation; CE3+; GROWTH; (LU;
D O I：
10.1016/j.jcrysgro.2016.10.018
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Praseodymium-doped (Gd2Y)(Ga3Al2) O-12 (GYGAG: Pr) single crystals are grown by the micro-pulling down method with different Pr concentrations. The energy transfer process between Pr3+ and Gd3+ is investigated by photoluminescence excitation (PLE) and emission (PL) spectra measurements. Photoelectron yield measurements are carried out using photomultiplier. At 662 keV gamma-rays, photoelectron yield of 2520 phe/MeV obtained for the GYGAG: Pr (0.01%) sample is larger than that of 1810 phe/MeV obtained for BGO crystal. Light yield degradation for the GYGAG: Pr scintillators is presumably due to the energy transfer from 5d state of Pr3+ to 4f state of Gd3+ together with the concentration quenching in the Gd3+-sublattice.
引用
收藏
页码：369 / 372
页数：4
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