Abstract
High spin states in 76,78Kr were populated via the 63Cu( 16O,n2p) 76Kr and 64Ni( 18O,4n) 78Kr reactions at 69 MeV and γγ coincidence data were collected. New band crossings and quasi-particle alignments are discussed. Moments of inertia of bands built on intrinsic excitations are found to be exceptionally constant with spin and equal to the rigid-body value, indicating strong suppression of coherent pairing correlations. The coexistence of such bands with bands of reduced, superfluid moments of inertia suggests the appearance of a new phenomenon: phase coexistence.
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