Abstract
High-spin spectroscopy on odd-odd has produced new illustrations of departures from the predictions of principal-axis cranking. Among the nine strongly coupled rotational bands observed, four are assigned to the parallel and antiparallel couplings of two configurations and This represents the first time that the high-spin properties of both couplings can be explored. We find that the measured values in the coupling of are 50% larger than those in the (↑↑) coupling, and represent the largest seen in this nucleus. Tilted-axis cranking calculations successfully explain the ratios in these two bands, while the particle-rotor calculations did not reproduce the full low-K enhancement. No inversion in the signatures of the band is observed, but there is a small inversion in the coupling up to and a large inversion in the band up to Remarkably, particle-rotor calculations with a interaction included are able to reproduce these inversions. A stronger interaction is needed to explain an inversion in the band.
- Received 17 September 1998
DOI:https://doi.org/10.1103/PhysRevC.59.1351
©1999 American Physical Society