Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations

Majola, S. N. T.; Bark, R. A.; Bianco, L.; Bucher, T. D.; Bvumbi, S. P.; Cullen, D. M.; Garrett, P. E.; Greenlees, P. T.; Hartley, D.; Hirvonen, J.; Jakobsson, U.; Jones, P. M.; Julin, R.; Juutinen, S.; Ketelhut, S.; Kheswa, B. V.; Korichi, A.; Lawrie, E. A.; Masiteng, P. L.; Maqabuka, B.; Mdletshe, L.; Minkova, A.; Ndayishimye, J.; Nieminen, P.; Newman, R.; Nyakó, B. M.; Ntshangase, S. S.; Peura, P.; Rahkila, P.; Riedinger, L. L.; Riley, M.; Roux, D.; Ruotsalainen, P.; Saren, J.; Sharpey-Schafer, J. F.; Scholey, C.; Shirinda, O.; Sithole, A.; Sorri, J.; Stolze, S.; Timár, J.; Uusitalo, J.; Zimba, G.

doi:10.1103/PhysRevC.100.034322

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Majola, S. N. T., Bark, R. A., Bianco, L., Bucher, T. D., Bvumbi, S. P., Cullen, D. M., Garrett, P. E., Greenlees, P. T., Hartley, D., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Korichi, A., Lawrie, E. A., Masiteng, P. L., . . . Zimba, G. (2019). Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations. Physical Review C, 100(3), Article 034322. https://doi.org/10.1103/PhysRevC.100.034322

Published in

Physical Review C

Authors

Majola, S. N. T. |

Bark, R. A. |

Bianco, L. |

Bucher, T. D. |

Bvumbi, S. P. |

Cullen, D. M. |

Garrett, P. E. |

Greenlees, P. T. |

Hartley, D. |

Hirvonen, J. |

Jakobsson, U. |

Jones, P. M. |

Julin, R. |

Juutinen, S. |

Ketelhut, S. |

Kheswa, B. V. |

Korichi, A. |

Lawrie, E. A. |

Masiteng, P. L. |

Maqabuka, B. |

Mdletshe, L. |

Minkova, A. |

Ndayishimye, J. |

Nieminen, P. |

Newman, R. |

Nyakó, B. M. |

Ntshangase, S. S. |

Peura, P. |

Rahkila, P. |

Riedinger, L. L. |

Riley, M. |

Roux, D. |

Ruotsalainen, P. |

Saren, J. |

Sharpey-Schafer, J. F. |

Scholey, C. |

Shirinda, O. |

Sithole, A. |

Sorri, J. |

Stolze, S. |

Timár, J. |

Uusitalo, J. |

Zimba, G.

Date

2019

Discipline

Kiihdytinlaboratorio Accelerator Laboratory

Copyright

Low-spin states of 157Dy have been studied using the JUROGAM II array, following the 155Gd (α, 2n) reaction at a beam energy of 25 MeV. The level scheme of 157Dy has been expanded with four new bands. Rotational structures built on the [523]5/2− and [402]3/2+ neutron orbitals constitute new additions to the level scheme as do many of the inter- and intraband transitions. This manuscript also reports the observation of cross I+→(I–1)− and I−→(I–1)+ E1 dipole transitions interlinking structures built on the [523]5/2− (band 5) and [402]3/2+ (band 7) neutron orbitals. These interlacing band structures are interpreted as the bands of parity doublets with simplex quantum number s=–i related to possible octupole correlations.

Publisher

American Physical Society

ISSN Search the Publication Forum

2469-9985

Additional information about funding

This work is supported by the South African National Research Foundation under Grants No. 96829, No. 109711, No. 93531, No. 109134, No. 116666, and No. 106012. Support for L.B. and P.E.G. was provided by the Natural Sciences and Engineering Research Council of Canada. JYFL research is supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2006–2011, Contract No. 2135 ... showmore

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