Forty-Three DayCd11548

Abstract

A 43-day isotope of cadmium has been discovered while irradiating cadmium with slow neutrons. The radiation consists of $\beta$-rays of energy ∼1.5 Mev, and with approximately one 0.5-Mev $\gamma$-ray per disintegration. By means of chemical separations, the radio element was identified as cadmium, and the mass assignment to ${}_{48}{}^{}{}_{}{}^{}\mathrm{Cd}_{}^{115}{}_{}{}^{}$ was made by a fast neutron ${\mathrm{In}}^{115}\mathrm{}(n,p)\mathrm{}{\mathrm{Cd}}^{115}$ reaction.