Thermoluminescence and Optical Stimulated Luminescence Studies of Sapphire

Abstract:

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Sapphire crystals grown by an improved Kyropoulos-like method were irradiated by gamma rays and electrons in this paper. Thermoluminescence (TL) and optical stimulated luminescence (OSL) properties of sapphire were studied. TL glow curves of sapphire were varied within the room temperature to 500°C at a heating rate of 10min•s-1. The OSL spectra wavelength covered were from 200nm to 700nm. There was a new peak at 220°C, which was produced by the irradiation of gamma rays and electrons. Two broad bands at 330nm and 410nm were found in the luminescence spectra, which were due to transitions of two charge states of an anion vacancy defect, corresponding to F+ and F color centers, respectively.

Info:

Periodical:

Advanced Materials Research (Volumes 105-106)

Edited by:

Wei Pan and Jianghong Gong

Pages:

585-588

DOI:

10.4028/www.scientific.net/AMR.105-106.585

Citation:

H. L. Zhang et al., "Thermoluminescence and Optical Stimulated Luminescence Studies of Sapphire", Advanced Materials Research, Vols. 105-106, pp. 585-588, 2010

Online since:

April 2010

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$35.00

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