Abstract
High-spin states in [Formula Presented] have been populated using the [Formula Presented] reaction at a beam energy of 180 MeV. Four of the five previously known rotational structures have been extended to higher spin [Formula Presented] and excitation energy. In addition, three new sequences were observed, two of which form a strongly-coupled band. This latter structure is likely based on the [404]9/2 proton orbital, which is associated with strong deformation driving behavior in nearby Pr and Pm nuclei. A systematic examination of the crossing frequencies based on the rotational alignment of [Formula Presented] protons and [Formula Presented] neutrons is also presented. The dependence of the crossing frequencies on deformation and Fermi surface can be inferred based on experimental observation and evidence for reduced proton and possibly neutron pairing fields is presented.
Original language | English |
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Pages (from-to) | 11 |
Number of pages | 1 |
Journal | Physical Review C - Nuclear Physics |
Volume | 60 |
Issue number | 1 |
DOIs | |
State | Published - 1999 |
Externally published | Yes |