Luminescence properties and scintillation response in Ce3+-doped Y2Gd1Al5-xGaxO12 (x=2, 3, 4) single crystals

被引：22

作者：

Chewpraditkul, Warut ^{[1
]}

Panek, Dalibor ^{[2
]}

Bruza, Petr ^{[2
]}

Chewpraditkul, Weerapong ^{[1
]}

Wanarak, Chalerm ^{[1
]}

Pattanaboonmee, Nakarin ^{[1
]}

Babin, Vladimir ^{[3
]}

Bartosiewicz, Karol ^{[3
]}

Kamada, Kei ^{[4
]}

Yoshikawa, Akira ^{[4
,5
]}

Nikl, Martin ^{[3
]}

机构：

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

[2] Czech Tech Univ, Fac Biomed Engn, Kladno, Czech Republic

[3] AS CR, Inst Phys, Prague 16253, Czech Republic

[4] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[5] Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 08期

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

INORGANIC SCINTILLATORS; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; CE3+; YAG; LUAG;

D O I：

10.1063/1.4893675

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The compositional dependence of luminescence properties and scintillation response were investigated in Ce3+-doped Y2Gd1Al5-xGaxO12 (x = 2, 3, 4) single crystals. The Gd3+ -> Ce3+ energy transfer was evidenced by photoluminescence excitation spectra of Ce3+ emission. With increasing Ga content in the garnet host, the Ce3+ luminescence from the lowest 5d level (5d1) is shifted toward higher energy due to the decrease in the crystal field splitting of the 5d levels. Light yield (LY) and its dependence on the amplifier shaping time were measured under excitation with gamma-rays. High LY value of similar to 38 000 ph/MeV was obtained for a Y2Gd1Al3Ga2O12:Ce sample. Scintillation decay was measured with an extended dynamical and temporal scale under the nanosecond pulse soft X-ray excitation. The decrease of both LY value and relative contribution of slower decay component in the scintillation response was observed with increasing Ga content in the garnet host. (C) 2014 AIP Publishing LLC.

引用

页数：7

共 42 条

[1] SINGLE-CRYSTAL OF YAG - NEW FAST SCINTILLATOR IN SEM [J].