Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2;2+1→0+1) value of 142Sm

Stegmann, R.; Bauer, C.; Rainovski, G.; Pietralla, N.; Stahl, C.; Bönig, S.; Ilieva, S.; Blazhev, A.; Damyanova, A.; Danchev, M.; Gladnishki, K.; Jolie, J.; Lutter, R.; Pakarinen, Janne; Radeck, D.; Rapisarda, E.; Reiter, P.; Scheck, M.; Siebeck, B.; Stora, T.; Thöle, P.; Thomas, T.; Thürauf, M.; Vermeulen, M. J.; Voulot, D.; Warr, N.; Wenander, F.; Werner, V.; De Witte, H.

doi:10.1103/PhysRevC.91.054326

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Stegmann, R., Bauer, C., Rainovski, G., Pietralla, N., Stahl, C., Bönig, S., Ilieva, S., Blazhev, A., Damyanova, A., Danchev, M., Gladnishki, K., Jolie, J., Lutter, R., Pakarinen, J., Radeck, D., Rapisarda, E., Reiter, P., Scheck, M., Siebeck, B., . . . De Witte, H. (2015). Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2;2+1→0+1) value of 142Sm. Physical Review C, 91(5), Article 054326. https://doi.org/10.1103/PhysRevC.91.054326

Julkaistu sarjassa

Physical Review C

Tekijät

Stegmann, R. |

Bauer, C. |

Rainovski, G. |

Pietralla, N. |

Stahl, C. |

Bönig, S. |

Ilieva, S. |

Blazhev, A. |

Damyanova, A. |

Danchev, M. |

Gladnishki, K. |

Jolie, J. |

Lutter, R. |

Pakarinen, Janne |

Radeck, D. |

Rapisarda, E. |

Reiter, P. |

Scheck, M. |

Siebeck, B. |

Stora, T. |

Thöle, P. |

Thomas, T. |

Thürauf, M. |

Vermeulen, M. J. |

Voulot, D. |

Warr, N. |

Wenander, F. |

Werner, V. |

De Witte, H.

Päivämäärä

2015

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

It was shown that the evolution of the B(E2; 2+ 1 → 0+ 1 ) values in N = 80 isotones from Te to Nd is affected by the underlying subshell structure. This manifests itself in the observation of the local suppression of the B(E2) value at Z = 58 with respect to the neighboring nuclei 136Ba and 140Nd. To investigate this shell sensitivity toward the Z = 64 subshell gap, the B(E2; 2+ 1 → 0+ 1 ) value of the unstable nucleus 142Sm was measured utilizing the projectile Coulomb excitation technique. The radioactive ion beam (RIB) experiment was performed at the REX-ISOLDE facility at CERN. The B(E2) value of 32 (4) W.u. reflects the impact of the π(1g7/2 2d5/2) subshell closure at Z = 64 with respect to a linear scaling of collectivity with valence proton number.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

0556-2813

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