Resonance Absorption of Neutrons in Metal and Oxide Cylinders

Reactivity measurements on cadmium-clad cylinders of uranium, uranium oxide, thorium, and thorium oxide have been interpreted to yield the following effective resonance integrals. For cylinders all with radii of 1.73 cm and with the listed densities: The results are corrected for nonresonance absorptions of neutrons at energies above cadmium cutoff.