Charge Radii of 55,56Ni Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes
Sommer, F., König, K., Rossi, D. M., Everett, N., Garand, D., de Groote, R. P., Holt, J. D., Imgram, P., Incorvati, A., Kalman, C., Klose, A., Lantis, J., Liu, Y., Miller, A. J., Minamisono, K., Miyagi, T., Nazarewicz, W., Nörtershäuser, W., Pineda, S. V., . . . Teigelhöfer, A. (2022). Charge Radii of 55,56Ni Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes. Physical Review Letters, 129(13), Article 132501. https://doi.org/10.1103/PhysRevLett.129.132501
Julkaistu sarjassa
Physical Review LettersTekijät
Päivämäärä
2022Tekijänoikeudet
© 2022 American Physical Society
Nuclear charge radii of 55,56Ni were measured by collinear laser spectroscopy. The obtained information completes the behavior of the charge radii at the shell closure of the doubly magic nucleus 56Ni. The trend of charge radii across the shell closures in calcium and nickel is surprisingly similar despite the fact that the 56Ni core is supposed to be much softer than the 48Ca core. The very low magnetic moment μ(55Ni)=−1.108(20) μN indicates the impact of M1 excitations between spin-orbit partners across the N,Z=28 shell gaps. Our charge-radii results are compared to ab initio and nuclear density functional theory calculations, showing good agreement within theoretical uncertainties.
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American Physical Society (APS)ISSN Hae Julkaisufoorumista
0031-9007Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/159319080
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This work was supported in part by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project-ID 279384907—SFB 1245, by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Awards No. DE-SC0013365 and No. DE-SC0018083 (NUCLEI SciDAC-4 Collaboration), by the National Science Foundation under Grants No. PHY 19-13509, No. PHY-15-65546, and No. PHY-21-11185, and by NSERC under Grants No. SAPIN-2018-00027 and No. RGPAS-2018-522453. TRIUMF receives funding via a contribution through the National Research Council of Canada. Computations of VS-IMSRG were performed with an allocation of computing resources on Cedar at WestGrid and Compute Canada. We also thank the RRZE computing center of the Friedrich-Alexander University Erlangen–Nürnberg for supplying resources for this work. ...Lisenssi
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