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

被引：16

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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