The decays of 109,111Pd and 111Ag following neutron capture by Pd

•High-resolution γ-ray spectrometry in radioactive decays of 109Pd, 111g,mPd, and 111g,mAg.•Order-of-magnitude improvement in precision of γ-ray energies and intensities.•36 γ-rays previously unobserved in radioactive decay studies reported.•12 unknown and 10 roughly estimated weak β intensities replaced with precise values.

Improved precisions of the energies and intensities of the γ rays emitted in the decays of 109Pd and 111g,mPd have been obtained based on a high-resolution spectroscopic study of these γ emissions from radioactive samples produced by neutron capture by natural Pd. Correspondingly improved values of the energies and β feedings of the levels in the 109,111Ag daughters have been deduced. More precise energies and intensities have also been determined for the γ rays emitted in the decays of the 111Pd daughter activities 111g,mAg to 111Cd.