Abstract
High spin states in the nucleus154Er have been reinvestigated using the123Sb(35Cl, 4n) reaction and a variety of spectroscopic techniques including excitation functions,γ-γ coincidences,γ angular distribution and linear polarization measurements. From the measured energies, relative intensities and transition multipolarities a new level scheme has been deduced up to an excitation energy of ∼12 MeV and spin 36. An interpretation of the experimental results is given in terms of the deformed Woods-Saxon orbitals. Gigantic backbending (superdeformation) effect is studied theoretically within the cranking model.
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The authors greatefully acknowledge the important contribution of A. Guiral in setting up one of the experiments. The authors would also like to thank T. Bengtsson and I. Ragnarsson for letting us use the configuration controlling routine of their Nilsson code in our Woods-Saxon calculations.
One of us (J.D.) wishes to thank the Danish Research Council for financial support during bis stay at the NBI where part of this study was carried out. W.N. acknowledges support from the Swedish Natural Research Council in the form of the postdoctoral fellowship.
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Beck, F.A., Dudek, J., Haas, B. et al. High-spin structure in154Er. Z Physik A 319, 119–132 (1984). https://doi.org/10.1007/BF01415624
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DOI: https://doi.org/10.1007/BF01415624