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The luminescence, absorption and scattering of light in diamonds: Part IV. Raman effect

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Summary

This paper records various observations on the frequency, intensity and polarisation of the Raman line of frequency shift 1332 cm.-1 in diamonds. The scattering has been considered as a monochromatic reflection by phase-waves, and the consequences are discussed. No change in the frequency within 1 in 1000, nor any difference in intensity was found by varying the setting of the crystal or the angle of scattering. The depolarisation value was found to be 1, in disagreement with the supposed theoretical value of 2. The intensities and frequencies of the line in crystals varying enormously in their fluorescence and absorption properties were compared quantitatively and found to be sensibly the same. An interesting case of an irregularity of the spectral line noticed in an imperfect crystal is illustrated in the paper, and a suggestion is made that an intense local stress of the order of 1000 atmospheres is responsible for such an effect.

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Authors and Affiliations

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

    P. G. N. Nayar

Authors
  1. P. G. N. Nayar
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Additional information

Communicated by Sir C. V. Raman,kt.,f.r.s., n.l.

In conclusion, the author wishes to express his respectful thanks to Professor Sir C. V. Raman for his interest and encouragement in this work.

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Nayar, P.G.N. The luminescence, absorption and scattering of light in diamonds: Part IV. Raman effect. Proc. Indian Acad. Sci. 15, 310–315 (1942). https://doi.org/10.1007/BF03046024

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  • DOI: https://doi.org/10.1007/BF03046024

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