Nuclear Science and Engineering / Volume 22 / Number 1 / May 1965 / Pages 20-23
Technical Paper / dx.doi.org/10.13182/NSE65-A19758
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The epicadmium capture-to-fission cross-section ratio in U235 is obtained from post-irradiation measurements on bare and cadmium-covered samples exposed in the beryllium reflector of the Materials Testing Reactor. Relative capture-to-fission rates are determined from measurements of the quantities of U236 and of fission product Cs137 produced. The bare experiment measurements are used in combination with the cadmium-covered measurements to eliminate the need to know the yield and half-life of Cs137. For the irradiation spectrum, the experiment gives a value of 0.51 ± 0.03 for the U235 epicadmium α(above 0.51 eV).