Two distinct bands have been populated to high spin in the doubly-odd nucleus ${}_{}{}^{130}{}_{}{}^{}\mathrm{La}$ following the ${}_{}{}^{116}{}_{}{}^{}\mathrm{F}$,5n) reaction at 76 MeV. Both bands consist of strong M1 transitions with weaker E2 crossovers. One band, built on the π$h_{11/2}$⊗ν$h_{11/2}$ configuration, has a small signature splitting (∼50 keV) indicating a slightly triaxial shape. The other band, believed to be built on the π$h_{11/2}$⊗ν$g_{7/2}$ configuration, shows no signature splitting and is predicted to possess a near-axial prolate shape. Both bands show constant alignment with increasing spin with no low frequency band crossings due to the blocking effect of the $h_{11/2}$ proton.

• Received 1 June 1987

DOI:https://doi.org/10.1103/PhysRevC.36.1853