Effect of Mg co-doping on scintillation properties of Ce:Gd3(Ga, Al)5O12 single crystals with various Ga/Al ratios

被引：15
作者：
Yoshino, Masao [2 ,3 ]
Kamada, Kei [1 ,2 ]
Shoji, Yasuhiro [2 ,3 ]
Yamaji, Akihiro [3 ]
Kurosawa, Shunsuke [1 ,3 ]
Yokota, Yuui [1 ]
Ohashi, Yuji [3 ]
Yoshikawa, Akira [1 ,2 ,3 ]
Chani, Valery I. [3 ]
机构：
[1] Tohoku Univ, New Ind Creat Hatchery Ctr, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
[2] C&A Corp, T Biz, Aoba Ku, 6-6-10 Aoba, Sendai, Miyagi 9808579, Japan
[3] Tohoku Univ, Inst Mat Res, Aoba Ku, 6-6-10 Aoba, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF CRYSTAL GROWTH | 2017年 / 468卷
关键词：
Czochralski method; Single crystal growth; Gadolinium compounds; Gallium compounds; Oxides; Scintillator materials; LUMINESCENCE; GROWTH; AL;
D O I：
10.1016/j.jcrysgro.2016.12.054
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Mg co-doped Ce1%: Gd3GaxAl5-xO12 (Ce:GAGG) crystals (x=2.4, 2.7, 3.0) were successfully grown by the Czochralski (Cz) method. Effect of Mg co-doping on the scintillation properties of Ce: GAGG was examined. This study covers measurements of solidification fraction and scintillation properties such as light yield, energy resolution and non-proportionality for each crystal. Pulse-height spectra of various gamma and X-ray sources with energies ranged from 30 keV to 662 keV were measured. Regardless of the presence/absence of Mg dopant, the non-proportionality curves with lower content of gallium in the crystal structure tend to improve. Mg co-doped Ce: GAGG samples did not show a significant difference as compared with non co-doped Ce: GAGG. Mg co-doped crystals with x=2.4 and 2.7 showed the promising scintillation properties of faster decay time and higher energy resolution than those with x=3.0.
引用
收藏
页码：420 / 423
页数：4
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