Photo-Disintegration Cross Sections of Deuterium and Beryllium for the Gamma-Rays of Sodium 24 and Gallium 72

Abstract

Photo-neutron yields from spheres of ${\mathrm{D}}_2$O and Be containing ${\mathrm{Na}}^{24}$ and ${\mathrm{Ga}}^{72}$ gamma-ray sources were measured by spatial integration of induced foil activities in a large paraffin block. A standard neutron source was used to calibrate the apparatus.