Scintillation properties of Gd3(Al5-xGax)O12:Ce (x=2.3, 2.6, 3.0) single crystals

被引：18

作者：

Chewpraditkul, Warut ^{[1
]}

Pattanaboonmee, Nakarin ^{[1
]}

Sakthong, Ongsa ^{[1
]}

Chewpraditkul, Weerapong ^{[1
]}

Szczesniak, Tomasz ^{[2
]}

Moszynski, Marek ^{[2
]}

Kamada, Kei ^{[3
,4
]}

Kurosawa, Shunsuke ^{[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 / 81卷

基金：

欧盟地平线“2020”;

关键词：

Energy resolution; Gd-3(Al; Ga)(5)O-12:Ce; Light yield; Nonproportionality of light yield; Scintillation decay; Coincidence time resolution; OPTICAL-PROPERTIES; ENERGY RESOLUTION; GARNET; LUMINESCENCE; GA; AL; PERFORMANCE; GROWTH; RATIO; CE3+;

D O I：

10.1016/j.optmat.2018.05.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scintillation properties of Czochralski-grown Gd-3(Al5-xGax)O-12:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d(1)-> 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV gamma rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. In spite of a lower LY value, Gd3Al2.7Ga2.3O12:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with alpha- and gamma-rays (alpha/gamma ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. Good coincidence time resolution of Gd3Al2Ga3O12:Ce is due to a high initial photon emission rate.

引用

页码：23 / 29

页数：7