Letter | Published:

Diffraction of X-Rays by Liquid Metals

Nature volume 130, pages 473474 (24 September 1932) | Download Citation



WHEN a beam of monochromatic X-rays is passed through a liquid, the intensity of scattered radiation does not, in general, fall off uniformly with scattering angle. One or more regions of maximum intensity are usually observed, and these may appear as bands or diffuse rings on a photographic plate placed to receive the rays. These facts are well known. Nevertheless, it is probably true to say that no completely satisfying explanation of such effects has yet been produced. One of the most attractive proposals has been put forward by G. W. Stewart in a series of recent papers.1 Stewart suggests that temporary groupings of considerable numbers of atoms or molecules in the liquid would account for the observed diffraction effects. This view is somewhat strengthened by the observation that the maxima for the liquid state are frequently in positions very similar to those of the strongest maxima for the solid material. It therefore appears that the units in the liquid are probably trying to group themselves according to their customary positions below the melting point.

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  1. 1.

    See for example Phys. Rev., 37, 9; 1931.

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  1. Research Laboratories, General Electric Co., Ltd., Wembley, Aug. 19.

    • J. T. RANDALL
    •  & H. P. ROOKSBY


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