Abstract
As was first shown by Raman and Nilakantan1,2,3, the (111) crystal planes in diamond exhibit sharply defined reflexions of monochromatic X-rays incident on them which are distinct from the well-known Laue and Bragg effects. The same authors3 showed that the positions of these reflexions are in perfect accord with the Raman-Nath formula derived on the basis that they arise from the quantum mechanically excited infra-red vibrations of the crystal lattice.
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References
Raman, C. V., and Nilakantan, P., Curr. Sci., 9, 165 (1940).
Raman, C. V., Proc. Ind. Acad. Sci., A, 14, 317, 332 (1941). Raman, C. V., and Nilakantan, P., Proc. Ind. Acad. Sci., A, 14, 356 (1941).
Raman, C. V., and Nilakantan, P., Nature, 147, 118 (1941).
Lonsdale, K., Proc. Roy. Soc., A, 179, 315 (1942).
Raman, C. V., and Rendall, G. R., Proc. Ind. Acad. Sci., A, 19, 265 (1944).
Ramachandran, G. N., Proc. Ind. Acad. Sci., 20, 245 (1944).
Krishnan, R. S., Proc. Ind. Acad. Sci., 19, 298 (1944).
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KRISHNAN, R., RAMACHANDRAN, G. Dynamic X-Ray Reflexions in Diamond. Nature 155, 234–235 (1945). https://doi.org/10.1038/155234b0
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DOI: https://doi.org/10.1038/155234b0
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