High-spin structures of 88Kr and 89Rb: Evolution from collective to single-particle behaviors

Authors :: Astier, A.
Porquet, M. -G.
Venkova, Ts.
Duchene, G.
Azaiez, F.
Curien, D.
Deloncle, I.
Dorvaux, O.
Gall, B. J. P.
Redon, N.
Rousseau, M.
Stezowski, O.
Source :: Physical Review C 88, 024321 (2013)
Publication Year :: 2013
Abstract: The high-spin states of the two neutron-rich nuclei, 88Kr and 89R have been studied from the 18O + 208Pb fusion-fission reaction. Their level schemes were built from triple gamma-ray coincidence data and gamma-gamma angular correlations were analyzed in order to assign spin and parity values to most of the observed states. The two levels schemes evolve from collective structures to single-particle excitations as a function of the excitation energy. Comparison with results of shell-model calculations gives the specific proton and neutron configurations which are involved to generate the angular momentum along the yrast lines.<br />Comment: 12 pages, 9 figures, Physical Review C (2013) in press

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