Nuclear structure of194Pt

Abstract

The decay of 194Ir has been thoroughly studied resulting in the construction of a decay scheme consisting of 26 excited states and 69 transitions. Nine new levels and 29 new transitions were added to the previously known scheme. Of these, levels at 1,893.6 and 2,053.0 keV as well as 9 y-ray transitions are new to the 194pt level scheme. Precise y-ray energy and intensity measurements as well as quantitative coincidence measurements were performed, and the internal conversion spectrum was investigated with a Si(Li) detector. Directional correlation measurements were performed for selected cascades with the major result being the unique assignment of 0 § to the new level at 1,893.6 keV. The structure was interpreted within the framework of the PPQ model as well as the effective-core picture including nuclear triaxiality.Radioactivity 194Ir [from 193Ir(th, n,7)]; measured E. I.~, Ece, Ice, y7-coin, ~7(0), deduced log ft. 194pt deduced levels, J, ~z, B(E2) ratios.