Thermoluminescence of doped Gd3Ga5O12 garnet ceramics

被引：0
|
作者：
Jahnke, A [1 ]
Ostertag, M [1 ]
Ilmer, M [1 ]
Grabmaier, BC [1 ]
机构：
[1] UNIV MUNICH,INST KRISTALLOG & MINERAL,D-80333 MUNICH,GERMANY
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1995年 / 135卷 / 1-4期
关键词：
thermoluminescence; doped garnet ceramics; chromium; praseodymium; bismuth;
D O I：
暂无
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Gadolinium gallium garnet ceramics (GGG) doped with CP3+, Pr3+ and Bi3+ have efficient luminescence. Excited by X-rays some of the investigated scintillators show an afterglow which is detrimental to an application in medical radio diagnostics. Thermoluminescent measurements between 50 K and 600 K gave results that allow to estimate the trap concentration in these materials. Only shallow traps could be found in GGG:Cr. It seems that these traps are caused by lattice defects relative to oxygen deficiency. The thermoluminescence at higher temperatures of GGG:Pr and GGG:Bi reveals deep traps which determine the afterglow in these luminescent materials.
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页码：899 / 903
页数：5
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