• Phosphorescence patterns in diamond

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    • Keywords


      Photographic Plate; Fluorescence Pattern; Parallel Band; Bright Patch; Cleavage Plate

    • Abstract


      Phosphorescence patterns in a dozen cleavage plates of diamond revealing the variations in intensity of phosphorescence in different portions of the same diamond have been successfully recorded by the method of contact photography. Comparison of these with the fluorescence patterns in the same diamond shows that the yellow phosphorescence emission corresponds to the blue fluorescence patterns, and that the yellow fluorescence patterns, if present, are not recorded in phosphorescence. Geometric patterns such as parallel bands, triangles, hexagons and spirals have been obtained in many cases.

    • Author Affiliations


      V Chandrasekharan1

      1. Department of Physics, Indian Institute of Science, Bangalore
    • Dates


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