Abstract
As I pointed out some time ago1, a new kind of X-ray spectra can be obtained by focusing the characteristic X-radiation emerging from the surface layer of an object. Instead of the usual spectral lines, these spectra contain a series of monochromatic spectral images, each of them showing the distribution of a certain chemical element in the surface layer of the object. Fig. 1 shows a new arrangement of the object, crystal and photographic plate giving a more distinct and even enlarged monochromatic X-ray image. The object O is excited to secondary radiation by primary X-rays. The secondary radiation is reflected on the concave side of the cylindrical crystal K and collected to the true monochromatic X-ray image I. If the dimensions of the object are small compared with the radius R of the crystal, it is possible to satisfy the conditions for a true enlarged image by adjusting the positions and inclinations of object and photographic plate.
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NATURE, 134, 181 (1934).
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HÁMOS, L. The X-Ray Microscope. Nature 140, 30 (1937). https://doi.org/10.1038/140030a0
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DOI: https://doi.org/10.1038/140030a0
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