Observation of new h_9/2 and h_11/2 bands in ¹⁸⁷Tl

Abstract

The unfavoured signature of the rotation-aligned band associated with the prolate h9/2 structure in 187Tl has been identified. The deformation-aligned 11/2-[505] band is also confirmed and extended. While the alignment properties of the 11/2-[505] band seem to indicate that it has a similar magnitude of deformation as the prolate 186Hg core, the signature splitting at low spin, taken together with new self-consistent calculations, suggest that it may actually be triaxial with ± 180 near the bandhead. Show more