A Critical Assembly of Uranium Enriched to 10% in Uranium-235

G. E. Hansen; H. C. Paxton

doi:dx.doi.org/10.13182/NSE79-A19467

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 72 / Number 2

A Critical Assembly of Uranium Enriched to 10% in Uranium-235

G. E. Hansen, H. C. Paxton

Nuclear Science and Engineering / Volume 72 / Number 2 / November 1979 / Pages 230-236

Technical Paper / dx.doi.org/10.13182/NSE79-A19467

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Big Ten is described in the detail appropriate for a benchmark critical assembly. Characteristics provided are spectral indexes and a detailed neutron flux spectrum, Rossi-α on a reactivity scale established by positive periods, and reactivity coefficients of a variety of isotopes, including the fissionable materials. The observed characteristics are compared with values calculated with ENDF/B-IV cross sections.