Soderstrom, P.-A.Walker, Philip MWu, J.Regan, P HWatanabe, HLorusso, GNishimura, SInabe, N.Kurz, N.Lane, GregoryMoon, C-B2018-11-292018-11-290370-2693http://hdl.handle.net/1885/152754A detailed study of the structure of the doubly mid-shell nucleus View the MathML sourceDy10466170 has been carried out, following isomeric and β decay. We have measured the yrast band up to the spin-parity Jπ=6+Jπ=6+ state, the K=2K=2γ -vibration band up to the 5+5+ state, a low-lying negative-parity band based on a 2−2− state that could be a candidate for the lowest energy octupole vibration state within this nucleus, and a candidate for the Kπ=6+Kπ=6+ two quasi-particle isomer. This state was determined to have an excitation energy of 1643.91(23) keV and a half life of 0.99(4) μs, with a reduced hindrance for its decay to the ground-state band an order of magnitude lower than predicted by NpNnNpNn systematics. This is interpreted as being due to γ -vibrational mixing from a near degeneracy of the isomer and the 6+6+ state of the γ band. Furthermore, the parent nucleus 170Tb has been determined to have a half-life of View the MathML source0.91(−13+18) s with a possible spin-parity of 2−2−.application/pdf201610.1016/j.physletb.2016.09.0582018-11-29