Rotational bands and isomeric states in ¹⁷⁵Lu

Rotational bands in ¹⁷⁵Lu have been extended through investigation with the (n, n' γ) reaction. Spallation neutrons bombarded Lu samples, and the resulting γ rays were detected in a large-scale Compton-suppressed Ge detector array. Prompt- and delayed-γγ coincidences have been used to extend the 5/2⁺[402] band to spin 17/2, the 3/2⁺[411] band to spin 11/2, the 1/2⁺[411] band to spin 15/2, and the 1/2^-[541] and 9/2^-[514] bands to spin 21/2. A new band, based on the 7/2^-[523] configuration, is tentatively assigned from its bandhead to spin 13/2. The three-quasiparticle K^π=19/2⁺ isomer is confirmed and its half-life determined to be 984±13(stat.)±30(sys.) μs, in agreement with previous results.