High-spin and single-particle structure in173W and175W

Abstract
The level structures in 173W and 175W have been studied using (16O,4n) reactions. Rotational bands based on three different single-particle configurations are observed to high spin in each nucleus. From a comparison of their contrasting behaviour with the ground-state rotational bands in 172W and 174W, it is concluded that the decoupling of a pair of i13/2 neutrons causes the backbending in 174W. A single-quasiparticle Coriolis mixing calculation is able to reproduce the observed band structure up to high spin.