Luminescence and scintillation characteristics of (GdxY3-x)Al2Ga3O12:Ce (x=1,2,3) single crystals

被引：23

作者：

Chewpraditkul, Warut ^{[1
]}

Pattanaboonmee, Nakarin ^{[1
]}

Sakthong, Ongsa ^{[1
]}

Chewpraditkul, Weerapong ^{[1
]}

Szczesniak, Tomasz ^{[2
]}

Moszynski, Marek ^{[2
]}

Kamada, Kei ^{[3
,4
]}

Yoshikawa, Akira ^{[3
,4
]}

Nikl, Martin ^{[5
]}

机构：

[1] King Mongkuts Univ Technol Thonburi, Bangkok 10140, Thailand

[2] Natl Ctr Nucl Res, A Soltana 7, PL-05400 Otwock, Poland

[3] Tohoku Univ, IMR, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Sendai, Miyagi 9808579, Japan

[5] ASCR, Inst Phys, Cukrovarnicka 10, Prague 16253, Czech Republic

来源：

OPTICAL MATERIALS | 2018年 / 76卷

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

(Gd; Y)(3)Al2Ga3O12:Ce; Energy resolution; Luminescence; Scintillation decay; Time resolution; OPTICAL-PROPERTIES; ENERGY RESOLUTION; GARNET PHOSPHORS; CE3+; Y3AL5O12CE3+; IONIZATION; MECHANISM; STATE; PR3+; GD3+;

D O I：

10.1016/j.optmat.2017.12.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The luminescence and scintillation characteristics of Czochralski-grown (GdxY3-xAl2Ga3O12:Ce (x = 1,2,3) single crystals are presented. With increasing Gd content in this garnet host, the 5d(2) absorption band was blue-shifted while the 5d(1) absorption and 5d(1) -> 4f emission bands were red-shifted due to an increase in the crystal field splitting of the 5d levels. In addition, the luminescence quenching temperature of the Ce3+ emission and activation energy for thermal quenching decreased with increasing Gd content. The Gd3+ -> Ce3+ energy transfer was evidenced by photoluminescence excitation spectra of Ce3+ emission. At 662 keV gamma - rays, the light yield (LY) of 48,600 ph/MeV and energy resolution of 6.5% was measured for a Gd3Al2Ga3O12:Ce crystal. Scintillation decay measurements were performed using the time-correlated single photon counting technique. Superior time resolution of Gd3Al2Ga3O12:Ce is due to its high LY and fast scintillation response. The total mass attenuation coefficients at 60 and 662 keV gamma - rays were also determined. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：162 / 168

页数：7

共 48 条

[1] Luminescence quenching and scintillation response in the Ce3+ doped GdxY3-xAl5O12 (x=0.75, 1, 1.25, 1.5, 1.75, 2) single crystals [J].