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