Thermoluminescence, structural and magnetic properties of a Li2O-B2O3-Al2O3 glass system doped with LiF and TiO2

被引:10
作者
Ayta, W. E. F. [1 ]
Silva, V. A. [1 ]
Cano, N. F. [2 ]
Silva, M. A. P. [3 ,4 ]
Dantas, N. O. [1 ]
机构
[1] Univ Fed Uberlandia, Inst Fis, LNMIS, BR-38400902 Uberlandia, MG, Brazil
[2] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, Brazil
[3] Inst Fis Sao Carlos USP, BR-13560250 Sao Carlos, SP, Brazil
[4] Ctr Univ Cent Paulista UNICEP, BR-13563470 Sao Carlos, SP, Brazil
关键词
Thermoluminescence; Electron paramagnetic resonance; Lithium fluoride; Titanium oxide; Glasses; Ionizing radiation; ALKALI BORATE; HOLE-CENTERS; TITANIUM; ESR; MECHANISM; EPR; TL;
D O I
10.1016/j.jlumin.2011.01.011
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A Li2O-B2O3-Al2O3 glass system, un-doped and doped with LiF, and/or TiO2 was synthesized by the fusion method and its physical properties were investigated by thermoluminescence (TL), X-ray diffraction (XRD), electron paramagnetic resonance (EPR), atomic force microscopy (AFM) and differential thermal analysis (DTA). The samples were subjected to gamma-rays from a colbalt-60 (Co-60) source. These techniques provided evidence of LiF and LiF doped with Ti crystal formation in the glass system. A TL glow peak at about 433 K was sensitive to Co-60 gamma-rays and showed good linearity with doses and consequently could be used to quantify radiation doses. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:1002 / 1006
页数:5
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