High-spin states and yrast isomerism in 153Er |
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| Authors: | L Carlén S Jónsson J Krumlinde J Lyttkens N Roy H Ryde S Strömberg W Waluś GB Hagemann B Herskind |
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| Institution: | Department of Physics, Unirversity of Lund, Sölvegatan 14, S-223 62 Lund, Sweden;The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark |
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| Abstract: | Energy levels in 153Er have been populated in the reaction 144Sm(12C. 3n)153Er. Isotopically enriched targets were bombarded with 53–65 MeV 12C ions and the emitted γ-ray and conversion electron spectra were investigated. From studies of excitation functions. γ- coincidences, γ-ray multiplicities, delayed γ-radiation and angular distributions, the level scheme of 153Er has been constructed. The properties of the energy levels are discussed and compared with the results of calculations with a deformed shell model. The remarkable similarities and some important discrepancies of the level structure, when compared with adjacent, N = 85 nuclides, are emphasized. |
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| Keywords: | Nuclear reaction |
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