The cathodoluminescence (CL) emission from deformed and undeformed CaO single crystals has been studied in the scanning electron microscope. Deformation enhances the emission which appears, in the CL image, localized in the deformed regions of the crystal. The CL spectrum depends on the kind of deformation applied to the crystal and is unstable under the electron beam. The results are discussed in terms of impurities and of vacancy defects generated during the plastic deformation.
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Llopis et al. (1983) studied this question.
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