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1.
Long-sought isomer turns out to be the ground state of $^{76}$Cu / Canete, L. (Jyvaskyla U. ; Surrey U.) ; Giraud, S. (GANIL ; Michigan State U., East Lansing (main)) ; Kankainen, A. (Jyvaskyla U.) ; Bastin, B. (GANIL) ; Nowacki, F. (Strasbourg, IPHC) ; Ascher, P. (LP2I, Bordeaux) ; Eronen, T. (Jyvaskyla U.) ; Alcindor, V. Girard (GANIL ; IJCLab, Orsay) ; Jokinen, A. (Jyvaskyla U.) ; Khanam, A. (Jyvaskyla U. ; Surrey U. ; Helsinki U.) et al.
Isomers close to the doubly magic nucleus $^{78}$Ni ($Z=28$, $N=50$) provide essential information on the shell evolution and shape coexistence far from stability. The existence of a long-lived isomeric state in $^{76}$Cu has been debated for a long time. [...]
arXiv:2401.14018.- 2024-04-22 - 6 p. - Published in : Phys. Lett. B 853 (2024) 138663 Fulltext: 2401.14018 - PDF; Publication - PDF;
2.
Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni / Nies, L. (CERN ; Greifswald U.) ; Canete, L. (Jyvaskyla U. ; Surrey U.) ; Dao, D.D. (Strasbourg, IPHC) ; Giraud, S. (GANIL) ; Kankainen, A. (Jyvaskyla U.) ; Lunney, D. (IJCLab, Orsay) ; Nowacki, F. (Strasbourg, IPHC) ; Bastin, B. (GANIL) ; Stryjczyk, M. (Jyvaskyla U.) ; Ascher, P. (LP2I, Bordeaux) et al.
Isomers close to doubly-magic $^{78}_{28}$Ni$_{50}$ provide essential information on the shell evolution and shape coexistence near the ${Z=28}$ and ${N=50}$ double shell closure. We report the excitation energy measurement of the $1/2^{+}$ isomer in $^{79}_{30}$Zn$_{49}$ through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer. [...]
arXiv:2310.16915.- 2023-11-30 - 10 p. - Published in : Phys. Rev. Lett.
- Published in : Phys. Rev. Lett. Fulltext: PDF;
3.
Mass measurements towards doubly magic $^{78}$Ni: Hydrodynamics versus nuclear mass contribution in core-collapse supernovae / Giraud, S (GANIL ; Michigan State U., NSCL) ; Canete, L (Jyvaskyla U. ; Surrey U.) ; Bastin, B (GANIL) ; Kankainen, A (Jyvaskyla U.) ; Fantina, A F (GANIL) ; Gulminelli, F (LPC, Caen) ; Ascher, P (CENBG, Gradignan) ; Eronen, T (Jyvaskyla U.) ; Girard-Alcindor, V (GANIL ; IJCLab, Orsay ; Darmstadt, Tech. U.) ; Jokinen, A (Jyvaskyla U.) et al.
We report the first high-precision mass measurements of the neutron-rich nuclei $^{74,75}$Ni and the clearly identified ground state of $^{76}$Cu, along with a more precise mass-excess value of $^{78}$Cu, 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 $N=50$ neutron shell gap. [...]
2022 - 6 p. - Published in : Phys. Lett. B 833 (2022) 137309 Fulltext: PDF;

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