Abstract
DRS. O. R. FRISCH and G. Placzek state that they have carried out experiments with boron and cadmium in order to determine whether, as suggested by theory, the capture cross-section for slow neutrons is inversely proportional to their velocity. From their experiments it appears that cadmium, though a very efficient absorber for neutrons of thermal energies, becomes almost transparent for neutrons of energies not higher than one volt; their results, together with those recently obtained by Rasetti, indicate that the capture probability in cadmium has a maximum between 1 volt and 0-03 volt.
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Points from Foregoing Letters. Nature 137, 364 (1936). https://doi.org/10.1038/137364b0
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DOI: https://doi.org/10.1038/137364b0