Koszorus, A, Vormawah, LJ, Beerwerth, R, Bissell, ML, Campbell, P, Cheal, B, Devlin, CS 
ORCID: 0000-0002-8034-0085, Eronen, T, Fritzsche, S, Geldhof, S et al (show 9 more authors)
(2021)
Proton-neutron pairing correlations in the self-conjugate nucleus Sc-42.
PHYSICS LETTERS B, 819.
136439-.
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Abstract
Collinear laser spectroscopy of the $N=Z=21$ self-conjugate nucleus $^{42}$Sc has been performed at the JYFL IGISOL IV facility in order to determine the change in nuclear mean-square charge radius between the $I^{\pi}=0^{+}$ ground state and the $I^{\pi}=7^{+}$ isomer via the measurement of the $^{42\mathrm{g},42\mathrm{m}}$Sc 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 $^{42-46}$Sc 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Collinear laser spectroscopy, Hyperfine structure and isotope shift, Proton-neutron pairing, Charge radius |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 28 Jan 2022 11:15 |
| Last Modified: | 18 Jan 2023 21:14 |
| DOI: | 10.1016/j.physletb.2021.136439 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3147767 |
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