Thermoluminescence and radioluminescence of α-Al2O3:C,Mg at high temperatures

被引：16
|
作者：
Trindade, Neilo Marcos [1 ,2 ]
Jacobsohn, Luiz Gustavo [2 ]
机构：
[1] Fed Inst Educ Sci & Technol Sao Paulo, Dept Phys, BR-0110910 Sao Paulo, SP, Brazil
[2] Clemson Univ, Dept Mat Sci & Engn, 515 Calhoun Dr,Sirrine Hall 161, Clemson, SC 29634 USA
来源：
JOURNAL OF LUMINESCENCE | 2018年 / 204卷
基金：
巴西圣保罗研究基金会; 美国国家科学基金会;
关键词：
alpha-Al2O3:C; Mg; FNTD; Radioluminescence; Defect; High temperature; Thermoluminescence spectroscopy; NUCLEAR TRACK DETECTORS; KINETIC-ANALYSIS; OXIDES;
D O I：
10.1016/j.jlumin.2018.08.018
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A alpha-Al2O3:C,Mg single crystal was investigated by means of optical absorption and photoluminescence measurements aimed at the identification of defects involved in the luminescence process. It was also investigated by thermoluminescence (TL) measurements as a function of the spectral emission in the 1.7-5.0 eV range. Radioluminescence measurements under X-ray excitation as a function of the temperature, from room temperature up to 400 degrees C were executed. These measurements revealed the presence of F, F-type, F-aggregate, and Mg-perturbed F-type and F-aggregate centers, and their thermal quenching behavior. Further, the role of these defects as recombination centers in the TL process was revealed.
引用
收藏
页码：598 / 602
页数：5
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