Abstract

The nucleus 146Tb was studied from in beam γγ-and conversion electron measurements. The level scheme was established up to ∼5MeV above the (πh11/2vd3/2−1)5−β-isomer. In addition to the known (πh11/2vh11/2−1)10+ E3-isomer, the 8+ and 11+ members of this configuration were located. The levels at the yrast line are dominated by the couplings of the πh11/2vh11/2−1 valence nucleons to the collective 3− octupole state and to the πh11/2d5/2−1 and πh11/2g7/2−1 particle-hole excitations of 146Gd.

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