Exponential Experiments with Lattices of Uranium-233 Oxide and Thorium Oxide in Light and Heavy Water

An extended series of exponential experiments was carried out utilizing ²³³UO₂-ThO₂ fuel elements in uniform arrays in light and heavy water. In this series the principal parameters measured were material buckling (), reflector savings (λ), dysprosium disadvantage factor (ζ Dy), ratio of epicadmium to subcadmium capture in thorium (), and ratio of ²³²Th fission to ²³³U fission (). A total of 29 clean and poisoned lattices was measured.