Abstract
THE possibility of an evaporation of neutrons in connexion with the recently discovered explosion of the uranium nucleus after neutron impact is discussed by Dr. H. von Halban, jun., Prof. F. Joliot and Dr. L. Kowarski. The density distribution of thermal neutrons obtained by slowing down photo-neutrons from a Ra. Be source was studied in a solution of uranyl nitrate and in an equivalent solution of ammonium nitrate. At great distances from the source the uranyl solution showed an excess interpreted as a proof of the existence of the effect discussed.
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Points from Foregoing Letters. Nature 143, 478 (1939). https://doi.org/10.1038/143478b0
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DOI: https://doi.org/10.1038/143478b0
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