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, 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 BTekijät
Päivämäärä
2022Tekijänoikeudet
© 2022 The Authors. Published by Elsevier B.V. Funded by SCOAP3.
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 BVISSN Hae Julkaisufoorumista
0370-2693Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/150910892
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Suomen Akatemia; Euroopan komissioRahoitusohjelmat(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. acknowledge support under Grants No. 284516 and No. 312544. T.E. acknowledges support from the Academy of Finland under Grant No. 295207, and A.d.R. acknowledges support under Grant No. 306980. A.K. and L.C. acknowledge the funding from the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No. 771036 (ERC CoG MAIDEN). A.P. was supported by MICIU (Spain) Grants No. SEV-2016-0597 and No. PGC-2018-94583. We are grateful for the bilateral mobility Grants from the Institut Français in Finland, the Embassy of France in Finland, the French Ministry of Higher Education and Research, and the Finnish Society of Science and Letters. We are grateful for the mobility support from Projet International de Coopération Scientifique Manipulation of Ions in Traps and Ion sourCes for Atomic and Nuclear Spectroscopy (MITICANS). S.G. is grateful for the mobility Grant from the EDPSIME. Partial support from the CNRS PICS07889 is acknowledged. ...Lisenssi
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