Thermoluminescence characteristics of Li2B4O7 single crystal dosimeters doped with Mn

被引：15

作者：

Ekdal, E. ^{[1
]}

Karali, T. ^{[1
]}

Kelemen, A. ^{[2
]}

Ignatovych, M. ^{[3
]}

Holovey, V. ^{[4
]}

Harmansah, C. ^{[5
]}

机构：

[1] Ege Univ, Inst Nucl Sci, TR-35100 Izmir, Turkey

[2] Hungarian Acad Sci, Energy Res Ctr, H-1525 Budapest 114, Hungary

[3] NASU, Inst Surface Chem, UA-03164 Kiev, Ukraine

[4] NASU, Inst Electron Phys, UA-88000 Uzhgorod, Ukraine

[5] Ege Univ, Vocat Training Sch, TR-35100 Izmir, Turkey

来源：

RADIATION PHYSICS AND CHEMISTRY | 2014年 / 96卷

关键词：

Li2B4O7:Mn; Single crystal; Dosimetric properties; Kinetic parameters; THERMALLY STIMULATED LUMINESCENCE; LITHIUM TETRABORATE; KINETIC-PARAMETERS; TL; CU; AG;

D O I：

10.1016/j.radphyschem.2013.10.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, thermoluminescence (TL) characterization of newly developed Li2B4O7:Mn single crystal phosphor is reported. It is a very attractive material in personal dosimetry because of its near tissue equivalency (Z(eff) = 7.25). The crystal was grown by the Czochralski method from high purity compounds. Glow curve, dose response, and fading and reproducibility properties of this material were investigated. Its TL glow curve showed two well separated peaks at about 105 and 220 degrees C with a heating rate of 2 degrees C s(-1). The main peak at 220 degrees C has a linear dose response of up to 60 Gy. The thermal fading ratio of the material is about 8% for the main peak in 10 days. The results showed that there is no significant variation of TL responses for 15 sequential measurements. Apart from the dosimetric properties above, the TL kinetic parameters of the main peak at 220 degrees C of Li2B4O7:Mn single crystal phosphor were also calculated using the various heating rates method. Activation energy and frequency factor were found as 1.21 eV and 3.75 x 10(11) s(-1), respectively. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：201 / 204

页数：4

共 26 条

[1] Thermoluminescence properties of rare earth doped lithium magnesium borate phosphors [J].