Abstract: α-Al₂O₃∶C crystal was grown by Edge-Defined, Film-Fed Growth Technique (EFG) in which graphite heating unit and shield acted as the carbon source and high purity Al₂O₃ was used as the raw material. Thermoluminescence (TL) and optically stimulated luminescence (OSL) properties of as-grown crystal after annealing in H₂ were investigated. The crystal shows a single one-order kinetic glow peak at 460K and blue emission band at 415nm. OSL decay curve of α-Al₂O₃∶C crystal shows exponential characteristic. The decay curve is made up of two components, i.e. the faster component and the slower component. The TL and OSL responses of α-Al₂O₃∶C crystal show linearsublinearsaturation characteristics. The TL exhibits good linear dose response in the dose range from 5×10^-6 to 0.2Gy and saturation is about 10Gy. The OSL exhibits good linear dose response in the dose range from 5×10^-6 to 10Gy and saturation is about 30Gy.

Key words: α-Al₂O₃∶C, thermoluminescence, optically stimulated luminescence, edge-defined, film-fed growth technique