An Integral Measurement of Plutonium-239 and Uranium-233 Alpha

W. Y. Kato; R. J. Armani; R. P. Larsen; P. E. Moreland; L. A. Mountford; J. M. Gasidlo; R. J. Popek; C. D. Swanson

doi:dx.doi.org/10.13182/NSE71-A20343

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An Integral Measurement of Plutonium-239 and Uranium-233 Alpha

W. Y. Kato, R. J. Armani, R. P. Larsen, P. E. Moreland, L. A. Mountford, J. M. Gasidlo, R. J. Popek, C. D. Swanson

Nuclear Science and Engineering / Volume 45 / Number 1 / July 1971 / Pages 37-46

Technical Paper / dx.doi.org/10.13182/NSE71-A20343

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Integral values of the capture-to-fission cross-section ratio for ²³⁹Pu and ²³³U have been measured in a soft spectrum fast reactor critical assembly using mass spectrometric techniques to determine the capture rate. Values of 0.363 ± 0.024 and 0.10 ± 0.04 were obtained for ²³⁹Pu and ²³³U, respectively. The value of 0.363 ± 0.024 is in good agreement with the value calculated using the revised Gwin differential cross-section data for ²³⁹Pu. The value for ²³³U is within experimental error in agreement with the value calculated using ENDF/B data.