Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc
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 mu...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269321003798 |
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| author | Á. Koszorús L.J. Vormawah R. Beerwerth M.L. Bissell P. Campbell B. Cheal C.S. Devlin T. Eronen S. Fritzsche S. Geldhof H. Heylen J.D. Holt A. Jokinen S. Kelly I.D. Moore T. Miyagi S. Rinta-Antila A. Voss C. Wraith |
| author_facet | Á. Koszorús L.J. Vormawah R. Beerwerth M.L. Bissell P. Campbell B. Cheal C.S. Devlin T. Eronen S. Fritzsche S. Geldhof H. Heylen J.D. Holt A. Jokinen S. Kelly I.D. Moore T. Miyagi S. Rinta-Antila A. Voss C. Wraith |
| author_sort | Á. Koszorús |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-20T01:31:09Z |
| format | Article |
| id | doaj.art-1a8815303585489da605f220d276b5eb |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-20T01:31:09Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-1a8815303585489da605f220d276b5eb2022-12-21T19:58:06ZengElsevierPhysics Letters B0370-26932021-08-01819136439Proton-neutron pairing correlations in the self-conjugate nucleus 42ScÁ. Koszorús0L.J. Vormawah1R. Beerwerth2M.L. Bissell3P. Campbell4B. Cheal5C.S. Devlin6T. Eronen7S. Fritzsche8S. Geldhof9H. Heylen10J.D. Holt11A. Jokinen12S. Kelly13I.D. Moore14T. Miyagi15S. Rinta-Antila16A. Voss17C. Wraith18Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom; Corresponding author.Department of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomHelmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, GermanySchool of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United KingdomSchool of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United KingdomDepartment of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomDepartment of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, FinlandHelmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, GermanyDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, Finland; KU Leuven, Instituut voor Kern-en Stralingsfysica, B-3001 Leuven, BelgiumKU Leuven, Instituut voor Kern-en Stralingsfysica, B-3001 Leuven, Belgium; CERN, Experimental Physics Department, CH-1211 Geneva 23, SwitzerlandTRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada; Department of Physics, McGill University, 3600 Rue University, Montréal, QC H3A 2T8, CanadaDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, FinlandSchool of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United KingdomDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, FinlandTRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, CanadaDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, FinlandDepartment of Physics, University of Jyväskylä, PB 35(YFL) FIN-40351 Jyväskylä, FinlandDepartment of Physics, University of Liverpool, Liverpool L69 7ZE, United KingdomCollinear 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.http://www.sciencedirect.com/science/article/pii/S0370269321003798Collinear laser spectroscopyHyperfine structure and isotope shiftProton-neutron pairingCharge radius |
| spellingShingle | Á. Koszorús L.J. Vormawah R. Beerwerth M.L. Bissell P. Campbell B. Cheal C.S. Devlin T. Eronen S. Fritzsche S. Geldhof H. Heylen J.D. Holt A. Jokinen S. Kelly I.D. Moore T. Miyagi S. Rinta-Antila A. Voss C. Wraith Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc Physics Letters B Collinear laser spectroscopy Hyperfine structure and isotope shift Proton-neutron pairing Charge radius |
| title | Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc |
| title_full | Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc |
| title_fullStr | Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc |
| title_full_unstemmed | Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc |
| title_short | Proton-neutron pairing correlations in the self-conjugate nucleus 42Sc |
| title_sort | proton neutron pairing correlations in the self conjugate nucleus 42sc |
| topic | Collinear laser spectroscopy Hyperfine structure and isotope shift Proton-neutron pairing Charge radius |
| url | http://www.sciencedirect.com/science/article/pii/S0370269321003798 |
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