Afterglow and Thermoluminescence of UV-Irradiated MgO Surfaces at Low Temperature
- 1 October 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (10R)
- https://doi.org/10.1143/jjap.30.2594
Abstract
Afterglow emission and thermoluminescence are observed on UV-irradiated MgO powders at low temperatures of 140 K-300 K under high vacuum. The main peak of the TL spectrum is at 3.1 eV with a shoulder at about 2.3 eV. A plausible emission process is discussed in terms of the tunneling recombination of an electron of Fs + centers and a hole of Vs - centers on the surfaces. The luminescence is quenched by O2 gas exposure at low temperature.Keywords
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