Characteristics of LiAlO2 - Radioluminescence and optically stimulated luminescence

被引：20

作者：

Lee, J. I. ^{[1
]}

Pradhan, A. S. ^{[1
]}

Kim, J. L. ^{[1
]}

Chang, I. ^{[1
]}

Kim, B. H. ^{[1
]}

Chung, K. S. ^{[2
,3
]}

机构：

[1] Korea Atom Energy Res Inst, Dept Hlth Phys, Taejon 305353, South Korea

[2] Gyeongsang Natl Univ, Res Inst Natl Sci, Jinju 660701, South Korea

[3] Gyeongsang Natl Univ, Dept Phys, Jinju 660701, South Korea

来源：

RADIATION MEASUREMENTS | 2013年 / 56卷

关键词：

LiAlO2; Radioluminescence; Optically stimulated luminescence; Emission spectrum; Online dosimetry;

D O I：

10.1016/j.radmeas.2013.01.066

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：

Radioluminescence (RL) and optically stimulated luminescence (OSL) results of LiAlO2 were compared with Al2O3:C. For blue (470 nm) optical stimulation, RL + OSL signal in LiAlO2 exhibited a sharp initial increase followed by a decay within the first 20 s of continuous wave (CW)-OSL and a very slow increase thereafter. The RL + OSL signal was about 1.25 times of its RL signal in LiAlO2 as compared to 2.5 times in Al2O3:C. With the continued beta irradiation, the RL signal exhibited a faster growth in LiAlO2 than that in Al2O3:C. Emission spectrum of LiAlO2 exhibited multiple emission peaks in the range from 320 to 380 nm as against 410 nm of Al2O3:C. RL and OSL emission spectra were similar in both LiAlO2 and Al2O3:C. The intense RL in LiAlO2 (about 300 times of that of its background signal) for a beta ray dose rate of 4.6 mGy/s appears attractive for radiation dosimetry including real time/online dosimetry and dose mapping. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：217 / 222

页数：6

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