Letter | Published:

X-Ray Diffraction Effect Shown by some Specimens of Chrysotile

Nature volume 162, pages 334335 (28 August 1948) | Download Citation

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Abstract

IN a study of the ‘tailed‘spots occurring on X-ray fibre photographs of chrysotile a camera with a slit approximately 0·7 cm. high was used, so that nearly 1 cm. of the fibre Was irradiated. The purpose was to obtain lines instead of spots in the X-ray photograph, and thus facilitate photometry. The lines obtained, however, Were beaded, the effect being particularly evident with specimens from Barberton (Figs. A and B). A specimen from Thetford showed only a slight variation in intensity along the lines (Fig. C), and a Russian specimen showed no visible variation. The effect can be imitated to some extent by pinching at regular intervals a specimen not showing it (Fig. D).

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  1. Viriamu Jones Laboratory, University College, Cardiff. April 28.

    • J. G. JONES
    •  & A. J. C. WILSON

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DOI

https://doi.org/10.1038/162334b0

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