## Abstract

High-spin spectroscopy on odd-odd [Formula Presented] 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 [Formula Presented] and [Formula Presented] This represents the first time that the high-spin properties of both couplings can be explored. We find that the measured [Formula Presented] values in the [Formula Presented] coupling of [Formula Presented] are 50% larger than those in the [Formula Presented] (↑↑) coupling, and represent the largest seen in this nucleus. Tilted-axis cranking calculations successfully explain the [Formula Presented] 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 [Formula Presented] band is observed, but there is a small inversion in the [Formula Presented] coupling up to [Formula Presented] and a large inversion in the [Formula Presented] band up to [Formula Presented] Remarkably, particle-rotor calculations with a [Formula Presented] interaction included are able to reproduce these inversions. A stronger [Formula Presented] interaction is needed to explain an inversion in the [Formula Presented] band.

Original language | English |
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Pages (from-to) | 1351-1378 |

Number of pages | 28 |

Journal | Physical Review C - Nuclear Physics |

Volume | 59 |

Issue number | 3 |

DOIs | |

Publication status | Published - 1999 |

Externally published | Yes |