1. High-spin excitations of the odd-odd 88 37Rb51 and 86 35Br51 nuclei: $ \pi$p3/2 $ \nu$d5/2 and $ \pi$f5/2 $ \nu$d5/2 residual interactions.
- Author
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Porquet, M.-G, Astier, A., Venkova, Ts., Deloncle, I., Azaiez, F., Buta, A., Curien, D., Dorvaux, O., Duchêne, G., Gall, B. J. P., Khalfallah, F., Piqueras, I., Rousseau, M., Meyer, M., Redon, N., Stézowski, O., Lucas, R., and Bogachev, A.
- Subjects
NUCLEAR excitation ,PARTICLES (Nuclear physics) ,ANGULAR correlations (Nuclear physics) ,GAMMA rays ,FERMI surfaces ,NUCLEAR research - Abstract
The odd-odd
88 37 Rb51 and86 35 O$ + $51 nuclei have been produced as fission fragments in the fusion reaction18 O$ + $208 Pb at 85MeV bombarding energy and studied with the Euroball IV array. Their high-spin level schemes have been built from the triple $ \gamma$ -ray coincidence data and $ \gamma$ - $ \gamma$ angular correlations have been analyzed in order to assign spin and parity values to many observed states. The proposed configurations involve proton excitations from three sub-shells located close to the Fermi levels, $ \pi$ p3/2 , $ \pi$ f5/2 , and $ \pi$ g9/2 , the $ \nu$ d5/2 neutron acting as a spectator. The residual $ \pi$ $ \nu$ interactions are extracted from the multiplets of states resulting from the $ \pi$ p3/2 $ \nu$ d5/2 and $ \pi$ f5/2 $ \nu$ d5/2 configurations. The empirical values of the latter are discussed and compared to those known in two similar configurations having jp = jn with lp = ln + 1 , where the role of the tensor force had been highlighted. [ABSTRACT FROM AUTHOR]- Published
- 2009
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