Abstract
SINCE January 1, 1951, the smaller pile at Harwell has been used for irradiating CBA mice daily with fast neutrons. These were fission neutrons obtained by allowing thermal neutrons escaping from the graphite reflector to interact with uranium on the floor of the compartments in which the animals were housed. It is believed that less than 5 per cent of the biological effects produced was due to contaminating radiations. Dose-rates were measured with homogeneous ‘tissue’ (C0.15 H1.00 N0.00 O0.48) and hydrocarbon (CH) ionization chambers, an allowance being made for gamma-ray ionization by simultaneous readings with an argon chamber1.
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Neary, G. J., and Munson, R. J. (to be published).
Deringer, M. K., Heston, W. B., and Lorenz, E., Manhattan District Declassified Document 1247 (1947).
Evans, T. C., Radiology, 50, 811 (1948).
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NEARY, G., MUNSON, R. & MOLE, R. Effects of Daily Irradiation by Fast Neutrons on Male Fertility. Nature 171, 256 (1953). https://doi.org/10.1038/171256a0
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DOI: https://doi.org/10.1038/171256a0
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