Precision energy and intensity measurements in 152Sm, 152Gd and 154Gd

The properties of the gamma transitions emitted in the decay of 152Eu and 154Eu have been studied. The energies and relative intensities of 87 and 82 gamma rays from the decays of 152Eu and 154Eu respectively, have been precisely measured. The precision in the present energies and intensities is in general much better than the earlier reported results. These measurements also confirm the existence of several controversial weak gamma transitions involved in these decays. (author)