We have observed that a radiation emitted from beryllium under the influence of radium gamma rays excites induced radioactivity in iodine, and we conclude that neutrons are liberated from beryllium by gamma rays.
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References
NATURE, 134, 237, Aug. 18, 1934.
NATURE, 134, 462, Sept. 22, 1934.
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SZILARD, L., CHALMERS, T. Detection of Neutrons Liberated from Beryllium by Gamma Rays: a New Technique for Inducing Radioactivity. Nature 134, 494–495 (1934). https://doi.org/10.1038/134494b0
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DOI: https://doi.org/10.1038/134494b0
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