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LIGHT MASS YIELDS IN THE 14 Mev NEUTRON FISSION OF U-235
D.G. Vallis, Alexandra Thomas
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Abstract
By irradiating targets of highly enriched U/sup 235/ with 14.7 Mev neutrons produced by the D,T reaction in the Aldermaston Cockcroft-Walton accelerator, the fission Ga/sup 73/, Zn/sup 72/, and Ni/sup 66/ were determined relative to that of Mo/sup 99/. A determination of the absolute fission yield of Mo/sup 99/ was made under the same experimental conditions by irradiating mixtures of iron and U/sup 235/ solutions followed by measurement of the activities of Mo/sup 99/ and Mn/sup 56/ produced by fission and (n,p) reaction respectively. A value of 5.2 plus or minus 0.5% was obtained in good agreement with the previously published figure of 5.17%. (auth)