Search for elements 119 and 120

Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch. E.; Ackermann, D.; Andersson, L.-L.; Asai, M.; Block, M.; Boll, R. A.; Brand, H.; Cox, D. M.; Dasgupta, M.; Derkx, X.; Di Nitto, A.; Eberhardt, K.; Even, J.; Evers, M.; Fahlander, C.; Forsberg, U.; Gates, J. M.; Gharibyan, N.; Golubev, P.; Gregorich, K. E.; Hamilton, J. H.; Hartmann, W.; Herzberg, R.-D.; Heßberger, F. P.; Hinde, D. J.; Hoffmann, J.; Hollinger, R.; Hübner, A.; Jäger, E.; Kindler, B.; Kratz, J. V.; Krier, J.; Kurz, N.; Laatiaoui, M.; Lahiri, S.; Lang, R.; Lommel, B.; Maiti, M.; Miernik, K.; Minami, S.; Mistry, A. K.; Mokry, C.; Nitsche, H.; Omtvedt, J. P.; Pang, G. K.; Papadakis, P.; Renisch, D.; Roberto, J. B.; Rudolph, D.; Runke, J.; Rykaczewski, K. P.; Sarmiento, L. G.; Schädel, M.; Schausten, B.; Semchenkov, A.; Shaughnessy, D. A.; Steinegger, P.; Steiner, J.; Tereshatov, E. E.; Thörle-Pospiech, P.; Tinschert, K.; Torres De Heidenreich, T.; Trautmann, N.; Türler, A.; Uusitalo, J.; Wegrzecki, M.; Wiehl, N.; Van Cleve, S. M.; Yakusheva, V.

doi:10.1103/physrevc.102.064602

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Khuyagbaatar, J., Yakushev, A., Düllmann, C. E., Ackermann, D., Andersson, L.-L., Asai, M., Block, M., Boll, R. A., Brand, H., Cox, D. M., Dasgupta, M., Derkx, X., Di Nitto, A., Eberhardt, K., Even, J., Evers, M., Fahlander, C., Forsberg, U., Gates, J. M., . . . Yakusheva, V. (2020). Search for elements 119 and 120. Physical Review C, 102(6), Article 064602. https://doi.org/10.1103/physrevc.102.064602

Julkaistu sarjassa

Physical Review C

Tekijät

Khuyagbaatar, J. |

Yakushev, A. |

Düllmann, Ch. E. |

Ackermann, D. |

Andersson, L.-L. |

Asai, M. |

Block, M. |

Boll, R. A. |

Brand, H. |

Cox, D. M. |

Dasgupta, M. |

Derkx, X. |

Di Nitto, A. |

Eberhardt, K. |

Even, J. |

Evers, M. |

Fahlander, C. |

Forsberg, U. |

Gates, J. M. |

Gharibyan, N. |

Golubev, P. |

Gregorich, K. E. |

Hamilton, J. H. |

Hartmann, W. |

Herzberg, R.-D. |

Heßberger, F. P. |

Hinde, D. J. |

Hoffmann, J. |

Hollinger, R. |

Hübner, A. |

Jäger, E. |

Kindler, B. |

Kratz, J. V. |

Krier, J. |

Kurz, N. |

Laatiaoui, M. |

Lahiri, S. |

Lang, R. |

Lommel, B. |

Maiti, M. |

Miernik, K. |

Minami, S. |

Mistry, A. K. |

Mokry, C. |

Nitsche, H. |

Omtvedt, J. P. |

Pang, G. K. |

Papadakis, P. |

Renisch, D. |

Roberto, J. B. |

Rudolph, D. |

Runke, J. |

Rykaczewski, K. P. |

Sarmiento, L. G. |

Schädel, M. |

Schausten, B. |

Semchenkov, A. |

Shaughnessy, D. A. |

Steinegger, P. |

Steiner, J. |

Tereshatov, E. E. |

Thörle-Pospiech, P. |

Tinschert, K. |

Torres De Heidenreich, T. |

Trautmann, N. |

Türler, A. |

Uusitalo, J. |

Wegrzecki, M. |

Wiehl, N. |

Van Cleve, S. M. |

Yakusheva, V.

Päivämäärä

2020

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the 50Ti+249Bk and 50Ti+249Cf fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the 249Bk target partially decayed into 249Cf, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the 50Ti+249Bk and 50Ti+249Cf reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.

Julkaisija

American Physical Society (APS)

ISSN Hae Julkaisufoorumista

2469-9985

Lisätietoja rahoituksesta

This work was financially supported in part by the German BMBF (Grant No. 05P12UMFNE), the Helmholtz association (Grant No. VH-NG-723), the Helmholtz Institute Mainz, Swedish Research Council (Vetenskapsrådet VR Grants No. 2011-5253 and No. 2016-3969), the Australian Federal Government ARC (Grants No. DP170102318, No. DP170102423, and No. DP200100601), the US Department of Energy by LLNL (Grant N ... showmore

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