1979•Nuclear Science and EngineeringRequires access

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

G.E. Hansen, Hugh C. Paxton

Abstract

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.

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Key concepts: Uranium, Uranium-235, Enriched uranium, Uranium-238, Natural uranium, Nuclear engineering, Isotopes of uranium, Radiochemistry