Elsevier

Nuclear Physics A

Volume 347, Issues 1–2, 22 September 1980, Pages 141-169
Nuclear Physics A

The cranking model applied to Yb bands and band crossings

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Abstract

In-beam γ-ray spectroscopy experiments have been performed on 160, 161, 162Yb in Copenhagen and on 160Yb in Oak Ridge. Fifteen rotational sequences (bands) were observed, most of them beyond I = 20. Thirteen band crossings (upbends or backbends) were found, and these are classified according to the frequency and the gain in aligned angular momentum in the crossing. Six negative-parity side bands in 160,162Yb and the i132 band in 161Yb experience a similar crossing around ω = 0.36 MeV/h̵, a value intermediate to the frequencies of the first and second yrast backbends in 160Yb. Cranking model calculations are used to suggest quasiparticle assignments for the bands and to explain the nature of the three basic types of band crossings observed in our measurements.

References (31)

  • F.S. Stephens et al.

    Nucl. Phys.

    (1972)
  • R.M. Lieder et al.

    Phys. Lett.

    (1974)
  • R. Bengtsson et al.

    Nucl. Phys.

    (1979)
  • R. Bengtsson et al.

    Nucl. Phys.

    (1979)
  • L.L. Riedinger et al.

    Phys. Rev. Lett.

    (1980)
  • K. Neergård et al.

    Nucl. Phys.

    (1976)
  • G. Anderson et al.

    Nucl. Phys.

    (1976)
  • R.L. Hershberger et al.

    Annual Report

    (1975)
  • S. Frauendorf et al.
  • A. Faessler, M. Ploszajczak, and K. W. Schmid, to be...
  • E. Grosse et al.

    Phys. Rev. Lett.

    (1973)
  • L.L. Riedinger et al.

    Phys. Rev. Lett.

    (1974)
  • N.R. Johnson et al.

    Phys. Rev. Lett.

    (1978)
  • O.C. Kistner et al.

    Phys. Rev.

    (1978)
  • A. Bohr and B. Mottelson, Proc. Int. Conf. on Nuclear Structure,...R.M. Lieder et al.

    J. Phys. Soc. Japan

    (1978)
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