Spectroscopy of 157Yb and structure evolutions in odd-A Yb isotopes

C. Xu et al.
Phys. Rev. C 87, 034325 – Published 26 March 2013; Erratum Phys. Rev. C 107, 049901 (2023)

Abstract

The spectroscopy of 157Yb has been studied via 144Sm(16O,3n)157Yb fusion-evaporation reaction. The properties of bands associated with the νi13/2 orbital and νh9/2 orbital in 157Yb are analyzed in comparison with the triaxial particle-rotor-model calculations. The characters of signature splitting for both positive-parity νi13/2 and negative-parity νh9/2 bands in 157Yb and heavier odd-A Yb isotopes are discussed. The newly observed bands 1 and 2 in 157Yb are suggested to be the signature partners of the νh9/2 band. A systematic study of the band crossing frequencies associated with the i13/2 neutron-pair and h11/2 proton-pair alignments for the Yb isotopes, as well as the Er and Hf isotopes, are made.

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  • Received 11 October 2012

DOI:https://doi.org/10.1103/PhysRevC.87.034325

©2013 American Physical Society

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Vol. 87, Iss. 3 — March 2013

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