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It is shown that the polarization of luminescence from a cubic crystal, when excited by plane polarized light, may be used to determine the symmetry axes of the luminescent centres. This information is most readily obtained from a specimen which is bounded by (100) faces and by using light travelling normally to the faces. Experiments on a diamond cut in this way are described. The results are for the green luminescence from centres induced by heat treatment after irradiation. These centres appear to have symmetry axes along 〈110〉 directions.
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Elliott et al. (1958) studied this question.
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