Abstract
IN view of the large apparent difference between the sensitivities of bean roots to neutrons and γ-rays, a search was made by L. H. Gray and J. Read for possible contributions to the energy absorption in tissue resulting from neutron irradiation, such as induced radioactivity. The activity induced in ashed grass was measured experimentally, and was found to correspond to a quite inappreciable contribution to the total energy absorption. The difference in sensitivity to neutrons and γ-rays is therefore considered to be real.
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Points from Foregoing Letters. Nature 144, 517 (1939). https://doi.org/10.1038/144517a0
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DOI: https://doi.org/10.1038/144517a0