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arxiv: 1308.0162 · v1 · pith:B2D6RJGQnew · submitted 2013-08-01 · ⚛️ nucl-ex · nucl-th

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

classification ⚛️ nucl-ex nucl-th
keywords angularcollectivehigh-spinschemessingle-particlestatesstructureswere
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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.

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