Isomers in the N = 83 nucleus 149Dy |
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Authors: | A.M. Stefanini P.J. Daly P. Kleinheinz M.R. Maier R. Wagner |
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Affiliation: | Institut für Kernphysik, Kernforschungsanlage J:ulich, D-517 Jülich, Germany |
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Abstract: | Energy levels in the N = 83 nucleus 149Dy were studied by the reaction 152Gd(α, 7n) at 106 MeV bombarding energy using in-beam γ-ray spectroscopy methods. The measurements identified three isomers in this nucleus, at 1073 keV (13 ± 3 ns), at 2700±150keV (5 μs < T < 0.5 s), and above 3.5 MeV (50 ± 15 ns). The low-lying isomer is interpreted as i. The configuration ?(πh2)10+ ×vf is suggested for the state at 2.7 MeV. |
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Keywords: | Nuclear reactions |
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