Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc
Koszorús, Á., Vormawah, L.J., Beerwerth, R., Bissell, M.L., Campbell, P., Cheal, B., Devlin, C.S., Eronen, T., Fritzsche, S., Geldhof, S., Heylen, H., Holt, J.D., Jokinen, A., Kelly, S., Moore, I.D., Miyagi, T., Rinta-Antila, S., Voss, A., & Wraith, C. (2021). Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc. Physics Letters B, 819, Article 136439. https://doi.org/10.1016/j.physletb.2021.136439
Julkaistu sarjassa
Physics Letters BTekijät
Voss, A. |
Päivämäärä
2021Tekijänoikeudet
© 2021 The Author(s). Published by Elsevier B.V. Funded by
SCOAP3.
Collinear laser spectroscopy of the N=Z=21 self-conjugate nucleus 42Sc has been performed at the JYFL IGISOL IV facility in order to determine the change in nuclear mean-square charge radius between the Iπ=0+ ground state and the Iπ=7+ isomer via the measurement of the 42g,42mSc isomer shift. New multi-configurational Dirac-Fock calculations for the atomic mass shift and field shift factors have enabled a recalibration of the charge radii of the 42−46Sc isotopes which were measured previously. While consistent with the treatment of proton-neutron, proton-proton and neutron-neutron pairing on an equal footing, the reduction in size for the isomer is observed to be of a significantly larger magnitude than that expected from both shell-model and ab-initio calculations. The measured nuclear magnetic dipole moment and electric quadruple moment, on the other hand, are in good agreement with simple empirical estimates and shell-model calculations.
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ElsevierISSN Hae Julkaisufoorumista
0370-2693Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/97849084
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TRIUMF re-ceives funding via a contribution through the National Research Council of Canada. This work was further supported by NSERC, the Arthur B. McDonald Canadian Astroparticle Physics Research Insti-tute, Canadian Institute for Nuclear Physics. This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012-2017 (Project No. 251353), Nu-clear and Accelerator Based Physics Research at JYFL), the UK Sci-ence and Technology Facilities Council (STFC). This work was also supported by the Bundesministerium für Bildung und Forschung (BMBF, Germany) under Projects No. 05P18SJCIA. ...Lisenssi
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