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Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc (2021)

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

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Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatKoszorús, Á.; Vormawah, L.J.; Beerwerth, R.; Bissell, M.L.; Campbell, P.; Cheal, B.; Devlin, C.S.; Eronen, T.; Fritzsche, S.; Geldhof, S.; et al.

Lehti tai sarjaPhysics Letters B








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Julkaisun avoin saatavuusAvoimesti saatavilla

Julkaisukanavan avoin saatavuusKokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/76648

Rinnakkaistallenteen verkko-osoite (pre-print)https://arxiv.org/abs/2102.01988


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.


Vapaat asiasanatcollinear laser spectroscopy; hyperfine structure and isotope shift; proton-neutron pairing; charge radius

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Viimeisin päivitys 2024-22-04 klo 15:26