The decays of 117Cd following neutron activation of enriched 116Cd

Abstract A new set of spectrometric data on γ ray energies and intensities in the decays of the 117g.m Cd isomers (2.5 h and 3.4 h) has been accumulated. Uncertainties in the energies and intensities have been reduced by about an order of magnitude relative to previous studies. Through observation of their time dependence, several transitions are shown as incorrectly assigned in previous studies, and many new transitions were assigned to the respective decays. The placements of other transitions are shown to be doubtful based on poor energy fits. Energies and β -decay intensities have been deduced for the excited states in the 117 In daughter. Some additional γ rays from the decay of daughter 117g In to 117 Sn have also been observed.