High temperature thermoluminescence of Mn2+-doped MgF2 phosphor for personal dosimetry

被引：8
|
作者：
Secu, M. [1 ]
Secu, C. E. [1 ]
Jipa, S. [2 ,3 ]
Zaharescu, T. [2 ]
Cutrubinis, M. [4 ]
机构：
[1] Natl Inst Mat Phys, Bucharest 077125, Romania
[2] Natl Inst Elect Engn INCDIE ICPE CA, Bucharest 030138, Romania
[3] Valachia Univ, Fac Sci, Targoviste 130024, Romania
[4] IFIN HH, Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
来源：
RADIATION MEASUREMENTS | 2008年 / 43卷 / 2-6期
关键词：
MgF2 : Mn2+; thermoluminescence; phosphor; dosimetry;
D O I：
10.1016/j.radmeas.2007.11.047
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：
Thermoluminescence (TL) curve recorded after gamma-irradiation at room temperature of Mn2+-doped MgF2 phosphor shows TL peaks at 91, 147, 200, 235 and 295 degrees C. The 147 degrees C peak was tentatively attributed to the F centres recombination with hole centres trapped in the neighbourhood of the Mn2+ impurity. This peak shows a good stability (low fading) and has been used to characterise the TL phosphor dosimetric properties. TL dose dependence has shown a good linearity in the range from 0.2 to 10 mGy, which makes it suitable for personal and medical dosimetry. The TL curves recorded after gamma rays or particles irradiation are similar, which suggests the possibility to use the phosphor also for particle detection. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：383 / 386
页数：4
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