Influence of Thermal and Optical Treatments on the OSL Response of Al2O3 : C Pellets Using Blue Light Stimulation

被引：2
|
作者：
Yoshizumi, Mara T. [1 ]
Xavier, Marcos [1 ]
Caldas, Linda V. E. [1 ]
机构：
[1] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, Comissao Nacl Energia Nucl, BR-05508000 Sao Paulo, Brazil
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2013年 / 60卷 / 02期
关键词：
Al2O3 : C; annealing; optical bleaching; optically stimulated luminescence;
D O I：
10.1109/TNS.2012.2228502
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This work presents a study of the OSL residual signal of Al2O3:C pellets after different annealing/bleaching treatments. It is shown that this luminescent material has deep trapping centers which are not associated with the TL main peaks and they are not completely emptied with an annealing up to 800 degrees C. This fact was noticed when using blue light for the OSL stimulation. Optical bleaching using high power LEDs (blue, green and white) demonstrated that lower energies (green) result into higher residual OSL signal; and bleaching with similar energy (of that used for stimulation) shows better results.
引用
收藏
页码：979 / 982
页数：4
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