T-band phenomena in 183Re

High-spin states in 183Re have been studied using the 176Yb(11B,4n) reaction at 52 and 57 MeV. Two high-K bands have been observed directly by a time-correlated γ-γ coincidence measurement. One of the bands is built on an isomeric Kπ=(25/2)+ state at Ex=1908 keV with a half-life of 0.82(2) ms. The other band, assigned as Kπ=(29/2)- at Ex=2739 keV, decays to the (25/2)+ band. These bands are interpreted as three-quasiparticle structures, π(5/2)+[402] x ν(9/2)+[ 624] x ν(11/2)+[615] for the (25/2)+ band and π(9/2)-[514] x ν(9/2)+ [624] x ν(11/2)+[615] for the (29/2)- band. The Kπ=(29/2)- band becomes strongly Coriolis mixed with increasing spin and is gradually changing into a low-K s-band structure. (orig.)