## Abstract

Excited states have been identified in the very neutron-deficient [Formula Presented] nucleus. High-spin spectroscopy has been performed using the Gammasphere array, and the assignment of gamma-ray transitions to [Formula Presented] has been made in a separate experiment in which gamma rays were detected in coincidence with x rays and with recoiling evaporation residues. A previously observed sequence of five gamma rays has been extended by 11 transitions, to high spin, and has been identified as the yrast [Formula Presented] band of [Formula Presented] Two additional bands have been observed and are tentatively assigned to be based on protons in the [Formula Presented] and [Formula Presented] orbitals. Alignments of pairs of [Formula Presented] neutrons and protons are observed in all of the bands. The alignments are compared to cranked Woods-Saxon calculations, and are discussed with respect to the effects of a neutron-proton interaction. Of particular interest are the features of the [Formula Presented] alignment in the [Formula Presented] band and of the [Formula Presented] alignment in the [Formula Presented] band. The frequencies of these alignments can be qualitatively explained only if a neutron-proton interaction is taken into account.

Original language | English |
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Number of pages | 1 |

Journal | Physical Review C - Nuclear Physics |

Volume | 63 |

Issue number | 2 |

DOIs | |

Publication status | Published - 1 Jan 2001 |