Abstract
IN a letter to NATURE of April 2, 1908 (vol. lxxvii., p. 509), I described some experiments of mine which showed that for the corpuscular rays produced in metals by Röntgen rays there was a lack of symmetry between those coming from the side of the metals on which the primary rays were incident and those coming from the side from which the primary rays emerged. The ionisation produced by the emergence secondary corpuscles was, in general, greater than that produced by the incidence corpuscles. This was in accordance with Prof. Bragg's results for the corpuscular rays produced by γ rays (NATURE, January 23, 1908, p. 270).
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COOKSEY, C. Secondary Kathode Rays. Nature 82, 128 (1909). https://doi.org/10.1038/082128c0
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DOI: https://doi.org/10.1038/082128c0
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