Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni
Nies, L., Canete, L., Dao, D. D., Giraud, S., Kankainen, A., Lunney, D., Nowacki, F., Bastin, B., Stryjczyk, M., Ascher, P., Blaum, K., Cakirli, R. B., Eronen, T., Fischer, P., Flayol, M., Girard Alcindor, V., Herlert, A., Jokinen, A., Khanam, A., . . . Äystö, J. (2023). Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni. Physical Review Letters, 131, Article 222503. https://doi.org/10.1103/PhysRevLett.131.222503
Julkaistu sarjassa
Physical Review LettersTekijät
Nies, L. |
Päivämäärä
2023Oppiaine
KiihdytinlaboratorioResurssiviisausyhteisöHyvinvoinnin tutkimuksen yhteisöAccelerator LaboratorySchool of Resource WisdomSchool of WellbeingTekijänoikeudet
© Published by the American Physical Society, 2023
Isomers close to doubly magic 78 28Ni50 provide essential information on the shell evolution and shape coexistence near the Z ¼ 28 and N ¼ 50 double shell closure. We report the excitation energy measurement of the 1=2þ isomer in 79 30Zn49 through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP multi-reflection time-of-flight mass spectrometer. We unambiguously place the 1=2þ isomer at 942(10) keV, slightly below the 5=2þ state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations which are used here for the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other N ¼ 49 isotones. The 1=2þ isomer is interpreted as the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band in 80Zn, and points to shape coexistence in 79;80Zn similar to the one observed in 78Ni. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart.
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Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
0031-9007Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/194699286
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Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Euroopan komissio; Suomen AkatemiaRahoitusohjelmat(t)
Akatemiatutkijan tutkimuskulut, SA; Akatemiatutkija, 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
We thank the ISOLDE technical group and the ISOLDE Collaboration for their support. We acknowledge the support of the German Max Planck Society, the French Institut National de Physique Nucléaire et de Physique des Particules (IN2P3), the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreements No. 682841 “ASTRUm,” 654002 “ENSAR2,” 101020842 “EUSTRONG,” and 771036 “MAIDEN”), as well as the German Federal Ministry of Education and Research (BMBF; Grants No. 05P18HGCIA, No. 05P21HGCI1, and No. 05P21RDFNB). L. N. acknowledges support from the Wolfgang Gentner Programme of the German Federal Ministry of Education and Research (Grant No. 13E18CHA). This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Program (Nuclear and Accelerator Based Physics Research at JYFL 2012-2017), and under Academy of Finland Grants No. 275389, No. 284516, No. 312544, No. 295207, and No. 306980. We acknowledge the bilateral mobility grant 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 PICS MITICANS (Manipulation of Ions in Traps and Ion sourCes for Atomic and Nuclear Spectroscopy). S. G. acknowledges the mobility grant from the EDPSIME. F. N and D. D. D. acknowledge the financial support of CNRS/IN2P3, France, via ABI-CONFI master projet. The JYFLTRAP experiment was conducted by L. C., S. G., A. K., B. B., P. A., T. E., V. G. A., A. J., A. K., I. D. M., D. A. N., F. D. O., H. P., C. P., I. P., A. D. R., V. R., M. V., and J. Ä. The ISOLTRAP experiment was conducted by L. N., R. B. C., P. F., M. F., A. H., D. La., M. Mü., M. M., Ch. S., and was conceived by U.K. The theoretical calculations were performed by D. D. D. and F. N. Funding and supervision were provided, in parts, by K. B. and L. S. The manuscript was prepared by L. N., D. D. D., A. K., D. Lu., F. N., and M. S. All authors contributed to the editing of the manuscript. ...Lisenssi
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