Abstract
IN the region of ordinary X-rays, variations in the intensity of radiation transmitted through a metal foil on the short wave-length side of an absorption edge have led to interesting results in relation to the zone-structure of the unoccupied electron levels of a metal. The extension of such fine structure measuiements to absorption edges which lie in the region of ultra-soft X-rays (say 100–300 A.) allows the possibility of a considerable increase in the resolving power of the method, since in this region the breadth of the underlying K, Llevels is known to be only of the order of 1/4 volt.
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References
Z. Phys., 94, 523 (1935).
Phys. Rev., 45, 370 (1934).
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SKINNER, H., JOHNSTON, J. Fine Structure of the L23 Absorption Edge of Magnesium Metal. Nature 137, 826–827 (1936). https://doi.org/10.1038/137826b0
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DOI: https://doi.org/10.1038/137826b0
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