Mass measurements towards doubly magic 78Ni : Hydrodynamics versus nuclear mass contribution in core-collapse supernovae

Giraud, S.; Canete, L.; Bastin, B.; Kankainen, A.; Fantina, A.F.; Gulminelli, F.; Ascher, P.; Eronen, T.; Girard, Alcindor V.; Jokinen, A.; Khanam, A.; Moore, I.D.; Nesterenko, D.A.; de Oliveira, Santos F.; Penttilä, H.; Petrone, C.; Pohjalainen, I.; De Roubin, A.; Rubchenya, V.; Vilen, M.; Äystö, J.

doi:10.1016/j.physletb.2022.137309

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Giraud, S., Canete, L., Bastin, B., Kankainen, A., Fantina, A.F., Gulminelli, F., Ascher, P., Eronen, T., Girard, A. V., Jokinen, A., Khanam, A., Moore, I.D., Nesterenko, D.A., de Oliveira, S. F., Penttilä, H., Petrone, C., Pohjalainen, I., De Roubin, A., Rubchenya, V., . . . Äystö, J. (2022). Mass measurements towards doubly magic 78Ni : Hydrodynamics versus nuclear mass contribution in core-collapse supernovae. Physics Letters B, 833, Article 137309. https://doi.org/10.1016/j.physletb.2022.137309

Julkaistu sarjassa

Physics Letters B

Tekijät

Giraud, S. |

Canete, L. |

Bastin, B. |

Kankainen, A. |

Fantina, A.F. |

Gulminelli, F. |

Ascher, P. |

Eronen, T. |

Girard, Alcindor V. |

Jokinen, A. |

Khanam, A. |

Moore, I.D. |

Nesterenko, D.A. |

de Oliveira, Santos F. |

Penttilä, H. |

Petrone, C. |

Pohjalainen, I. |

De Roubin, A. |

Rubchenya, V. |

Vilen, M. |

Äystö, J.

Päivämäärä

2022

Oppiaine

Kiihdytinlaboratorio Resurssiviisausyhteisö Accelerator Laboratory School of Resource Wisdom

Tekijänoikeudet

We report the first high-precision mass measurements of the neutron-rich nuclei 74,75Ni and the clearly identified ground state of 76Cu, along with a more precise mass-excess value of 78Cu, performed with the double Penning trap JYFLTRAP at the Ion Guide Isotope Separator On-Line (IGISOL) facility. These new results lead to a quantitative estimation of the quenching for the neutron shell gap. The impact of this shell quenching on core-collapse supernova dynamics is specifically tested using a dedicated statistical equilibrium approach that allows a variation of the mass model independent of the other microphysical inputs. We conclude that the impact of nuclear masses is strong when implemented using a fixed trajectory as in the previous studies, but the effect is substantially reduced when implemented self-consistently in the simulation.

Julkaisija

Elsevier BV

ISSN Hae Julkaisufoorumista

0370-2693

Rahoittaja(t)

Suomen Akatemia; Euroopan komissio

Rahoitusohjelmat(t)

Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA; Huippuyksikkörahoitus, SA

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

This work has been supported by the Academy of Finland Grant No. 284612 (the Finnish Centre of Excellence Program in Nuclear and Accelerator Based Physics Research at JYFL 2012-2017) and by the European Union's Horizon 2020 Research and Innovation Programme Grant Agreement No. 654002 (ENSAR2). A.K. acknowledges support from the Academy of Finland under Grant No. 275389, and D.A.N. and L.C. acknow ... showmore

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