Abstract
IN the past, beta applicators loaded with either radium or radon have been employed in radiotherapy1–5. But their use has never become widespread, chiefly because of the lack of penetrating power. Even the strongest beta particles, emitted by radium-E, have only a maximum energy of 1.17 MeV., which corresponds to an effective mean energy of 0.330 MeV.
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FREUNDLICH, H. A New Beta-Ray Applicator using Fission Products. Nature 164, 308–310 (1949). https://doi.org/10.1038/164308b0
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DOI: https://doi.org/10.1038/164308b0
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