Abstract
IT is known that a Geiger-Müller counter operated near a source of fast neutrons gives a rather large number of counts. Kikuchi, Aoki and Husimi1,2, working with a D-D source of neutrons, have postulated that these counts arise in part from a direct interaction of fast neutrons with electrons in the thin lead foil surrounding their counter. However, the recent discovery by Kallmann and Kuhn3 that gamma-rays are emitted in the D-D reaction seems to offer a simple and more satisfactory explanation for the phenomena observed by Kikuchi and co-workers. Confirmatory evidence is the discovery by Bonner4 of two groups of neutrons from the D-D reaction.
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References
Kikuchi, Aoki, Husimi, NATURE, 138, 841 (1936).
Kikuchi, Aoki, Husimi, Proc. Phys.-Math. Soc. Japan, 18, 727 (1936); 19, 734 (1937).
Kallmann and Kuhn, Naturwiss., 26, 106 (1938).
Bonner, Bull. Amer. Phys. Soc., 13, No. 2, 22 (1938).
Gibson, Seaborg, Grahame, Phys. Rev., 51, 370 (1937).
Seaborg, Gibson, Grahame, Phys. Rev., 52, 408 (1937).
Alvarez, Phys. Rev., 53, 606 (1938).
Takeda, Proc. Phys.-Math. Soc. Japan, 19, 835 (1937).
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SEABORG, G., GRAHAME, D. Neutron-Electron Interaction proposed by Kikuchi. Nature 141, 1053 (1938). https://doi.org/10.1038/1411053b0
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DOI: https://doi.org/10.1038/1411053b0
