Letter | Published:

Radioactivity induced by Bombardment with Neutrons of Different Energies

Nature volume 134, page 177 (04 August 1934) | Download Citation



FOLLOWING the announcements of Fermi and his collaborators1 on the radioactivity induced in many substances by bombardment with neutrons, we have undertaken some similar experiments. Using sources containing 50–100 millicuries of radon mixed with finely powdered beryllium, we have been able to confirm in general the results reported by Fermi, in addition to obtaining a few results independently similar to some which have since been, or are now being, published by him.

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  1. 1.

    See, for example, NATURE, 133, 757, May 19, 1934.

  2. 2.

    , etc., Roy. Soc. Proc., A, 141, 722; 1933 ; and A, 144, 692; 1934. Also Lauritsen, etc., Phys. Rev., 44, 692; 1933.

  3. 3.

    Amer. Phys. Soc. Proc., Berkeley Meeting, June 18, 1934, Abstract 12, and private communication to Dr. Oliphant.

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  1. Cavendish Laboratory, Cambridge. July 21.

    • T. BJERGE
    •  & C. H. WESTCOTT


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