Spectroscopy along flerovium decay chains. II : Fine structure in odd-A289Fl

Cox, D. M.; Såmark-Roth, A.; Rudolph, D.; Sarmiento, L. G.; Clark, R. M.; Egido, J. L.; Golubev, P.; Heery, J.; Yakushev, A.; Åberg, S.; Albers, H. M.; Albertsson, M.; Block, M.; Brand, H.; Calverley, T.; Cantemir, R.; Carlsson, B. G.; Düllmann, Ch. E.; Eberth, J.; Fahlander, C.; Forsberg, U.; Gates, J. M.; Giacoppo, F.; Götz, M.; Götz, S.; Herzberg, R.-D.; Hrabar, Y.; Jäger, E.; Judson, D.; Khuyagbaatar, J.; Kindler, B.; Kojouharov, I.; Kratz, J. V.; Krier, J.; Kurz, N.; Lens, L.; Ljungberg, J.; Lommel, B.; Louko, J.; Meyer, C.-C.; Mistry, A.; Mokry, C.; Papadakis, P.; Parr, E.; Pore, J. L.; Ragnarsson, I.; Runke, J.; Schädel, M.; Schaffner, H.; Schausten, B.; Shaughnessy, D. A.; Thörle-Pospiech, P.; Trautmann, N.; Uusitalo, J.

doi:10.1103/PhysRevC.107.L021301

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Cox, D. M., Såmark-Roth, A., Rudolph, D., Sarmiento, L. G., Clark, R. M., Egido, J. L., Golubev, P., Heery, J., Yakushev, A., Åberg, S., Albers, H. M., Albertsson, M., Block, M., Brand, H., Calverley, T., Cantemir, R., Carlsson, B. G., Düllmann, C. E., Eberth, J., . . . Uusitalo, J. (2023). Spectroscopy along flerovium decay chains. II : Fine structure in odd-A289Fl. Physical Review C, 107(2), Article L021301. https://doi.org/10.1103/PhysRevC.107.L021301

Julkaistu sarjassa

Physical Review C

Tekijät

Cox, D. M. |

Såmark-Roth, A. |

Rudolph, D. |

Sarmiento, L. G. |

Clark, R. M. |

Egido, J. L. |

Golubev, P. |

Heery, J. |

Yakushev, A. |

Åberg, S. |

Albers, H. M. |

Albertsson, M. |

Block, M. |

Brand, H. |

Calverley, T. |

Cantemir, R. |

Carlsson, B. G. |

Düllmann, Ch. E. |

Eberth, J. |

Fahlander, C. |

Forsberg, U. |

Gates, J. M. |

Giacoppo, F. |

Götz, M. |

Götz, S. |

Herzberg, R.-D. |

Hrabar, Y. |

Jäger, E. |

Judson, D. |

Khuyagbaatar, J. |

Kindler, B. |

Kojouharov, I. |

Kratz, J. V. |

Krier, J. |

Kurz, N. |

Lens, L. |

Ljungberg, J. |

Lommel, B. |

Louko, J. |

Meyer, C.-C. |

Mistry, A. |

Mokry, C. |

Papadakis, P. |

Parr, E. |

Pore, J. L. |

Ragnarsson, I. |

Runke, J. |

Schädel, M. |

Schaffner, H. |

Schausten, B. |

Shaughnessy, D. A. |

Thörle-Pospiech, P. |

Trautmann, N. |

Uusitalo, J.

Päivämäärä

2023

Tekijänoikeudet

Fifteen correlated α-decay chains starting from the odd-A superheavy nucleus 289Fl were observed following the fusion-evaporation reaction 48Ca+244Pu. The results call for at least two parallel α-decay sequences starting from at least two different states of 289Fl. This implies that close-lying levels in nuclei along these chains have quite different spin-parity assignments. Further, observed α-electron and α-photon coincidences, as well as the α-decay fine structure along the decay chains, suggest a change in the ground-state spin assignment between 285Cn and 281Ds. Our experimental results, on the excited level structure of the heaviest odd-N nuclei to date, provide a direct testing ground for theory. This is illustrated by comparison with new nuclear structure calculations based on the symmetry-conserving configuration mixing theory.

Julkaisija

American Physical Society (APS)

ISSN Hae Julkaisufoorumista

2469-9985

Rahoittaja(t)

Euroopan komissio

Rahoitusohjelmat(t)

The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.

Lisätietoja rahoituksesta

The results presented here are based on the experiment U310, which was performed at the beam line X8/TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany) in the frame of FAIR Phase-0. The authors would like to thank the ion-source and accelerator staff at GSI for their supreme efforts. This work has received funding from the European Union's Horizon 2020 research and in ... showmore

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