Abstract
A RECENT number of the Physikalische Zeitschrift (x., 46, 1909) contains an article, by Frederic A. Harvey, in which he states that radium B gives out α particles, the ionisation range of which in air lies between 2.6 mm. and 3.0 mm. In investigating these short-range α particles he used a modification of the method employed by Bragg and Kleeman (Phil. Mag., x., 318, 1905), but on account of the limited range of the radiation he did not use a cone of rays.
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BRONSON, H. On the α Rays from Radium B. Nature 80, 159 (1909). https://doi.org/10.1038/080159a0
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DOI: https://doi.org/10.1038/080159a0
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