Abstract
DR. A. H. COMPTON in a letter on this subject in NATURE of November 17, p. 366, described an experiment in which he reflected the Kα rays from a molybdenum Coolidge tube on to a slab of paraffin, and measured the absorption coefficient of the secondary scattered rays at different angles with respect to the direction of the primary beam. The absorption coefficient of the secondary rays was found to be 29 per cent. greater than that of the primary Kα beam at θ = 90°, and 6 per cent. greater at θ=20°. This softening of the rays on being scattered was still more pronounced when the K lines of tungsten were used.
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PLIMPTON, S. The Softening of Secondary X-Rays. Nature 108, 402 (1921). https://doi.org/10.1038/108402a0
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DOI: https://doi.org/10.1038/108402a0
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