Influence of magnesium concentration on thermal stability in LiF:Mg,Cu,P

被引：12

作者：

Tang, K. ^{[1
]}

Cui, H. ^{[1
]}

Wang, Y. ^{[1
]}

Zhu, H. ^{[1
]}

Fan, Q. ^{[1
]}

Mao, Y. ^{[1
]}

机构：

[1] Solid Dosimetr Detector & Method Lab, Beijing 102205, Peoples R China

来源：

RADIATION MEASUREMENTS | 2008年 / 43卷 / 07期

关键词：

Thermoluminescence; LiF:Mg; Cu; P; Thermal stability; GR-200; dosimeter; Thermoluminescence dosimeter;

D O I：

10.1016/j.radmeas.2008.05.008

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：

LiF:Mg,Cu,P detectors with nine different Mg concentrations ranging from 0.1 to 0.9 mol% were produced for fixed P and Cu concentrations of 1.2 and 0.03 mol%, respectively. Glow curves of samples annealed between 240 and 280 degrees C revealed that the curve shape and the intensity of thermoluminescence (TL) peaks clearly depend on the Mg concentration and annealing temperature. LiF:Mg,Cu,P doped with Mg concentrations,>= 0.4 mol% allowed heating of the material to higher temperatures than that originally employed for the GR-200A dosimeter. The sample doped with 0.6% Mg exhibited the smallest change in the relative total-TL due to annealing at different temperatures in the range from 240 to 280 degrees C, with respect to annealing at 240 degrees C. The thermal stability of LiF:Mg,Cu,P clearly depends on the Mg concentration. A high level of Mg doping might result in further changes in the solubility limit temperature and TL sensitivity. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1187 / 1190

页数：4

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