1. High-spin structure of the neutron-rich 109, 111, 113 45Rh isotopes.
- Author
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Venkova, Ts., Porquet, M.-G., Astier, A., Bauchet, A., Deloncle, I., Lalkovski, S., Buforn, N., Donadille, L., Dorvaux, O., Gall, B.J.P., Lucas, R., Meyer, M., Minkova, A., Prévost, A., Redon, N., Schulz, N., and Stézowski, O.
- Abstract
The
109,111,113 Rh nuclei have been produced as fission fragments in the fusion reaction18 O +208 Pb at 85 MeV. Their level schemes have been built from gamma-rays detected using the Euroball IV array. High-spin states of the neutron-rich111,113 Rh nuclei have been identified for the first time. Several rotational bands with the odd proton occupying the π g9/2 , π p1/2 and π( g7/2 / d5/2 ) sub-shells have been observed. A band of low-energy transitions has been identified at excitation energy around 2 MeV in109,111 Rh, which can be interpreted in terms of three-quasiparticle excitation, π g9/2 ν h11/2 ν g7/2 / d5/2 . In addition another structure built on states located at low excitation energy (608 keV in111 Rh, 570 keV in113 Rh) points out that, as already observed in the lighter isotopes107,109 Rh, triaxial deformation plays a role in the neutron-rich Rh isotopes well beyond the mid-shell. [ABSTRACT FROM AUTHOR]- Published
- 2002
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