Multiple band structures in Ta169

Rotational structures in the Ta-169 nucleus were studied via the Sn-124(V-51, 6n) reaction. These data were obtained as a side channel of an experiment focusing on Ta-171, but the sensitivity provided by the Gammasphere spectrometer proved sufficient for a significant extension of the level scheme of this rare-earth nucleus. Over 170 new transitions and four new band structures were placed in Ta-169, including the intruder pi i(13/2) structure. Linking transitions between all of the sequences were identified, and the relative excitation energies between the different configurations were determined for the first time. The rotational sequences were interpreted within the framework of the cranked shell model.