中国物理B ›› 2010, Vol. 19 ›› Issue (4): 47803-047803.doi: 10.1088/1674-1056/19/4/047803

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Thermoluminescence and optically stimulated luminescence disadvantages of α-Al2O3:C crystal grown by the temperature gradient technique

唐强1, 徐军2, 李红军2, 苏良碧2, 杨新波3, 毕群玉4, 程艳4   

  1. (1)Department of Physics, Sun Yat-Sen University, Guangzhou 510275, China; (2)Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China; (3)Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China; (4)Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, Chi
  • 收稿日期:2009-03-04 修回日期:2009-06-25 出版日期:2010-04-15 发布日期:2010-04-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~60607015 and 60878041) and the Innovation Funds from Shanghai Institute of Ceramics, CAS.

Thermoluminescence and optically stimulated luminescence disadvantages of $\alpha$-Al2O3:C crystal grown by the temperature gradient technique

Yang Xin-Bo(杨新波)a)c), Xu Jun(徐军)a)†, Li Hong-Jun(李红军)a), Bi Qun-Yu(毕群玉) b)c),Cheng Yan(程艳)b)c), Su Liang-Bi(苏良碧)a), and Tang Qiang(唐强) d)   

  1. a Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China; b Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; c Graduate School of the Chinese Academy of Sciences, Beijing 100049, Chinese; d Department of Physics, Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2009-03-04 Revised:2009-06-25 Online:2010-04-15 Published:2010-04-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~60607015 and 60878041) and the Innovation Funds from Shanghai Institute of Ceramics, CAS.

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摘要： Recently, α-Al2O3:C crystal with highly sensitive thermoluminescence (TL) and optically stimulated luminescence (OSL) has been successfully grown by the temperature gradient technique. This paper investigates the heating rate dependence of TL sensitivity, light-induced fading of TL signals and thermal stability of OSL of α-Al2O3:C crystals. As the heating rate increases, the integral TL response decreases and the dosimetric glow peak shifts to higher temperatures in α-Al2O3:C crystals. Light-induced fading of TL increases with the irradiation dose, and TL response decreases as the exposure time increases, especially in the first 15 minutes. With the increasing intensity of the exposure light, the TL fading of α-Al2O3:C crystal increases sharply. The OSL response of as-grown α-Al2O3:C crystal is quite stable below 373 K and decreases sharply for higher temperatures.

Abstract: Recently, $\alpha$-Al2O3:C crystal with highly sensitive thermoluminescence (TL) and optically stimulated luminescence (OSL) has been successfully grown by the temperature gradient technique. This paper investigates the heating rate dependence of TL sensitivity, light-induced fading of TL signals and thermal stability of OSL of $\alpha$-Al2O3:C crystals. As the heating rate increases, the integral TL response decreases and the dosimetric glow peak shifts to higher temperatures in $\alpha$-Al2O3:C crystals. Light-induced fading of TL increases with the irradiation dose, and TL response decreases as the exposure time increases, especially in the first 15 minutes. With the increasing intensity of the exposure light, the TL fading of $\alpha$-Al2O3:C crystal increases sharply. The OSL response of as-grown $\alpha$-Al2O3:C crystal is quite stable below 373 K and decreases sharply for higher temperatures.

Key words: $\alpha$-Al2O3:C, thermoluminescence, optically stimulated luminescence, light-induced fading

中图分类号:  (Thermoluminescence)

  • 78.60.Kn
78.55.Hx (Other solid inorganic materials)