Proton-neutron pairing correlations in the self-conjugate nucleus $^{42}$Sc
Nuclear Experiment
2021-06-24 v1
Abstract
Collinear laser spectroscopy of the self-conjugate nucleus Sc has been performed at the JYFL IGISOL IV facility in order to determine the change in nuclear mean-square charge radius between the ground state and the isomer via the measurement of the 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 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.
Keywords
Cite
@article{arxiv.2102.01988,
title = {Proton-neutron pairing correlations in the self-conjugate nucleus $^{42}$Sc},
author = {Agota Koszorus and Liam Vormawah and Randolf Beerwerth and Mark Bissell and Paul Campbell and Bradley Cheal and Charlie Devlin and Tommi Eronen and Stephan Fritzsche and Sarina Geldhof and Hanne Heylen and Jason Holt and Ari Jokinen and Sam Kelly and Iain Moore and Takayuki Miyagi and Sami Rinta-Antila and Annika Voss and Calvin Wraith},
journal= {arXiv preprint arXiv:2102.01988},
year = {2021}
}