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Short-lived isomers in 94Rb

Abstract : The medium-spin structure of the neutron-rich, odd-odd nucleus 94Rb was studied by means of γ -ray spectroscopy. Excited levels were populated in the neutron-induced fission of 235U and in the spontaneous fission of 252Cf and 248Cm. Two isomeric states were found at 1485.2 and 2074.8 keV with half-lives of 18 and 107 ns, respectively. The probable structures of the two isomers involve the fully aligned, proton-neutron configurations [π(g9/2) ⊗ ν(g7/2)]8+ and [π(g9/2) ⊗ ν(h11/2)]10− , respectively. These new data give information on the single-particle energies in the region.
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Submitted on : Wednesday, July 2, 2008 - 11:37:59 AM
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I. Tsekhanovich, G.S. Simpson, W. Urban, J. A. Dare, J. Jolie, et al.. Short-lived isomers in 94Rb. Physical Review C, American Physical Society, 2008, 78, pp.011301. ⟨10.1103/PhysRevC.78.011301⟩. ⟨in2p3-00292652⟩



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