Abstract
BOOTH1 has pointed out that if a strong diffuse streak of X-ray scattering connects two regions in the reciprocal lattice of a centrosymmetrical crystal, then the structure factors corresponding to those two regions must have the same sign; and he has suggested that this may be helpful in overcoming the X-ray crystallographer's bugbear: determination of phase. This argument is quite sound, it seems to me, if the diffuse scattering is due to displacement or vibration of those atoms the diffraction of which is mainly responsible for the reinforcing scattered waves which give the Bragg reflexions; and in crystals where this is the case, the method should be very useful.
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Booth, A. D., Nature, 158, 380 (1946).
Barnes, W. H., Proc. Roy. Soc., A, 125, 670 (1929).
Bernal, J. D., and Fowler, R. H., J. Chem. Phys., 1, 515 (1933).
Pauling, L., "The Nature of the Chemical Bond" (Cornell University Press, 1945), 302.
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LONSDALE, K. Statistical Structure of Ice and of Ammonium Fluoride. Nature 158, 582 (1946). https://doi.org/10.1038/158582b0
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DOI: https://doi.org/10.1038/158582b0
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