Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive 222Ra and 228Ra Beams

Butler, P. A.; Gaffney, L. P.; Spagnoletti, P.; Abrahams, K.; Bowry, M.; Cederkäll, J.; de Angelis, G.; De Witte, H.; Garrett, P. E.; Goldkuhle, A.; Henrich, C.; Illana, A.; Johnston, K.; Joss, D. T.; Keatings, J. M.; Kelly, N. A.; Komorowska, M.; Konki, J.; Kröll, T.; Lozano, M.; Nara Singh, B. S.; O'Donnell, D.; Ojala, J.; Page, R. D.; Pedersen, L. G.; Raison, C.; Reiter, P.; Rodriguez, J. A.; Rosiak, D.; Rothe, S.; Scheck, M.; Seidlitz, M.; Shneidman, T. M.; Siebeck, B.; Sinclair, J.; Smith, J. F.; Stryjczyk, M.; Van Duppen, P.; Vinals, S.; Virtanen, V.; Warr, N.; Wrzosek-Lipska, K.; Zielinska, M.

doi:10.1103/PhysRevLett.124.042503

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Butler, P. A., Gaffney, L. P., Spagnoletti, P., Abrahams, K., Bowry, M., Cederkäll, J., de Angelis, G., De Witte, H., Garrett, P. E., Goldkuhle, A., Henrich, C., Illana, A., Johnston, K., Joss, D. T., Keatings, J. M., Kelly, N. A., Komorowska, M., Konki, J., Kröll, T., . . . Zielinska, M. (2020). Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive 222Ra and 228Ra Beams. Physical Review Letters, 124(4), Article 042503. https://doi.org/10.1103/PhysRevLett.124.042503

Julkaistu sarjassa

Physical Review Letters

Tekijät

Butler, P. A. |

Gaffney, L. P. |

Spagnoletti, P. |

Abrahams, K. |

Bowry, M. |

Cederkäll, J. |

de Angelis, G. |

De Witte, H. |

Garrett, P. E. |

Goldkuhle, A. |

Henrich, C. |

Illana, A. |

Johnston, K. |

Joss, D. T. |

Keatings, J. M. |

Kelly, N. A. |

Komorowska, M. |

Konki, J. |

Kröll, T. |

Lozano, M. |

Nara Singh, B. S. |

O'Donnell, D. |

Ojala, J. |

Page, R. D. |

Pedersen, L. G. |

Raison, C. |

Reiter, P. |

Rodriguez, J. A. |

Rosiak, D. |

Rothe, S. |

Scheck, M. |

Seidlitz, M. |

Shneidman, T. M. |

Siebeck, B. |

Sinclair, J. |

Smith, J. F. |

Stryjczyk, M. |

Van Duppen, P. |

Vinals, S. |

Virtanen, V. |

Warr, N. |

Wrzosek-Lipska, K. |

Zielinska, M.

Päivämäärä

2020

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

There is sparse direct experimental evidence that atomic nuclei can exhibit stable “pear” shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in 222,228Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

0031-9007

Rahoittaja(t)

Suomen Akatemia

Rahoitusohjelmat(t)

Akatemiahanke, SA

Lisätietoja rahoituksesta

This work was supported by the following Research Councils and Grants: Science and Technology Facilities Council (UK) Grants No. ST/P004598/1, No. ST/L005808/1, No. ST/ R004056/1; Federal Ministry of Education and Research (Germany) Grants No. 05P18RDCIA, No. 05P15PKCIA, and No. 05P18PKCIA and the “Verbundprojekt 05P2018”; National Science Centre (Poland) Grant No. 2015/18/M/ ST2/00523; European ... showmore

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