Abstract
SEVERAL workers have recently discussed the diffuse spots which often appear in Laue X-ray crystal photographs and do not belong to the Laue pattern proper. Thus Preston has given1 illustrations of the spots in a number of cases and concludes that “the diffuse spots can be explained by the thermal vibrations of the lattice which break the crystal up into groups, consisting probably of an atom and its twelve neighbours. The thermal vibrations cause the interatomic distances to vary slightly from one group to another so that new diffraction maxima, characteristic of the group of atoms, are produced”.
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References
Proc. Roy. Soc., July 1939.
Phys. Rev., 57, 597 and 795 (1940).
NATURE, 146, 332 (1940).
Current Science, April 1940.
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BRAGG, W. The Extra Spots of the Laue Photograph. Nature 146, 509–511 (1940). https://doi.org/10.1038/146509a0
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DOI: https://doi.org/10.1038/146509a0
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