Intrinsic states and alignments in 175Re

Abstract

Excited states in 175Re have been identified using the 161Dy(19F, 5n)175Re reaction and γ-ray spectroscopy. Rotational bands associated with the 1-quasiparticle orbitals h 9 2, h 11 2, i 13 2, d 5 2 and g 7 2 have been identified, most to high-spin. Relative transition rates were used to extract B(M1)/B(E2) ratios and gK - gR values which support the assignments. Different alignment gains are observed in each of the 1-quasiparticle bands, attributable, at least in part, to configuration-dependent deformation differences. The complex alignment gain observed in the h 11 2 band is analysed in a 3-band model. A 3-quasiparticle, isomeric state and its rotational band were also observed. The properties of this band suggest a 1-quasiproton-2-quasineutron configuration for the isomer. Show more