Abstract
IT has been shown in a previous paper1 that the major part of the electron showers produced in a lead plate are formed by a 'cascade process' in accordance with the shower theory proposed by Bhabha and Heitler2 and Carlson and Oppenheimer3. Our experiments have been made with an automatic cloud chamber. Four lead plates of 3 cm. thickness are placed inside the chamber in a distance of 5 cm. A cloud chamber divided up in this way offers good opportunity of studying the way in which the showers are generally produced.
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References
Trumpy, B., Det. Kgl. N.V.S. Forh., 10, nr. 37 (1937).
Bhabha and Heitler, Proc. Roy. Soc., A, 159, 432 (1937).
Carlson and Oppenheimer, Phys. Rev., 51, 220 (1937).
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TRUMPY, B. Secondary Effects of the Hard and Soft Components of Cosmic Rays. Nature 141, 909–910 (1938). https://doi.org/10.1038/141909a0
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DOI: https://doi.org/10.1038/141909a0
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