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High-spin structures of $^{88}_{36}$Kr$_{52}$ and $^{89}_{37}$Rb$_{52}$: Evolution from collective to single-particle behavior

A. Astier 1 M. -G. Porquet 2 Ts. Venkova 2 G. Duchene 3 F. Azaiez 3 D. Curien 3 I. Deloncle 2 O. Dorvaux 3 B. J. P. Gall 3 N. Redon 4 Marc Rousseau 3 O. Stezowski 5 
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
4 Matière Nucléaire
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
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.
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Submitted on : Tuesday, September 3, 2013 - 1:51:29 PM
Last modification on : Sunday, June 26, 2022 - 11:59:37 AM

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A. Astier, M. -G. Porquet, Ts. Venkova, G. Duchene, F. Azaiez, et al.. High-spin structures of $^{88}_{36}$Kr$_{52}$ and $^{89}_{37}$Rb$_{52}$: Evolution from collective to single-particle behavior. Physical Review C, American Physical Society, 2013, 88, pp.024321. ⟨10.1103/PhysRevC.88.024321⟩. ⟨in2p3-00857354⟩



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