A1 Journal article (refereed)
Mass measurements towards doubly magic 78Ni : Hydrodynamics versus nuclear mass contribution in core-collapse supernovae (2022)


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


JYU authors or editors


Publication details

All authors or editorsGiraud, S.; Canete, L.; Bastin, B.; Kankainen, A.; Fantina, A.F.; Gulminelli, F.; Ascher, P.; Eronen, T.; Girard, Alcindor V.; Jokinen, A.; et al.

Journal or seriesPhysics Letters B

ISSN0370-2693

eISSN1873-2445

Publication year2022

Volume833

Article number137309

PublisherElsevier BV

Publication countryNetherlands

Publication languageEnglish

DOIhttps://doi.org/10.1016/j.physletb.2022.137309

Publication open accessOpenly available

Publication channel open accessOpen Access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/82593


Abstract

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.


Keywordsnuclear physicsneutrons

Free keywordsnuclear mass; penning trap; shell gap; core-collapse supernova


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Ministry reportingYes

Reporting Year2022

JUFO rating2


Last updated on 2024-03-04 at 18:06