Optically stimulated luminescence in anion-defective carbon doped α-Al2O3 crystals
- 1 December 1995
- journal article
- defects in-oxides
- Published by Taylor & Francis in Radiation Effects and Defects in Solids
- Vol. 134 (1) , 311-313
- https://doi.org/10.1080/10420159508227237
Abstract
Optically stimulated luminescence (OSL) was studied in C-doped α-Al2O3 crystals, which had previously been exposed to X or β irradiations. The OSL was excited by monochromatic UV light in 200–300 nm region. Emission maxima appeared at 330 nm and 410 nm which are attributed to F+ and F-luminescence respectively. This is supported by measurements of excitation spectra, which showed maxima at 260 and 215 nm. Results were compared to those obtained by measurements of the X-luminescence and phototransferred thermoluminescence in the same samples as well as in pure α-Al2O3 crystals. Effects of previous irradiations and of thermal treatment on the OSL intensities were also investigated.Keywords
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