Electromagnetic moments of scandium isotopes and N = 28 isotones in the distinctive 0f7/2 orbit

  • S. W. Bai
  • , Koszorús
  • , B. S. Hu
  • , X. F. Yang
  • , J. Billowes
  • , C. L. Binnersley
  • , M. L. Bissell
  • , K. Blaum
  • , P. Campbell
  • , B. Cheal
  • , T. E. Cocolios
  • , R. P. de Groote
  • , C. S. Devlin
  • , K. T. Flanagan
  • , R. F. Garcia Ruiz
  • , H. Heylen
  • , J. D. Holt
  • , A. Kanellakopoulos
  • , J. Krämer
  • , V. Lagaki
  • B. Maaß, S. Malbrunot-Ettenauer, T. Miyagi, R. Neugart, G. Neyens, W. Nörtershäuser, L. V. Rodríguez, F. Sommer, A. R. Vernon, S. J. Wang, X. B. Wang, S. G. Wilkins, Z. Y. Xu, C. X. Yuan

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The electric quadrupole moment of 49Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be Qs=−0.159(8) eb, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of 47,49Sc. The single-particle behavior and nucleon-nucleon correlations are investigated with the electromagnetic moments of Z=21 isotopes and N=28 isotones as valence neutrons and protons fill the distinctive 0f7/2 orbit, respectively, located between magic numbers, 20 and 28. The experimental data are interpreted with shell-model calculations using an effective interaction, and ab-initio valence-space in-medium similarity renormalization group calculations based on chiral interactions. These results highlight the sensitivity of nuclear electromagnetic moments to different types of nucleon-nucleon correlations, and establish an important benchmark for further developments of theoretical calculations.

Original languageEnglish
Article number137064
JournalPhysics Letters B
Volume829
DOIs
StatePublished - Jun 10 2022
Externally publishedYes

Funding

We acknowledge the support of the ISOLDE collaboration and technical teams and S. R. Stroberg for the imsrg++ code [64] used to perform VS-IMSRG calculations. This work was supported by the National Key R&D Program of China (Contract No. 2018YFA0404403 ), the National Natural Science Foundation of China (No: 11875073 , 12027809 , U1967201 , 11775316 ); the BriX Research Program No. P7/12 , FWO -Vlaanderen (Belgium), GOA 15/010 from KU Leuven ; the UK Science and Technology Facilities Council grants ST/L005794/1 and ST/P004598/1 ; ERC Consolidator Grant No. 648381 (FNPMLS); the NSF grant PHY-1068217 , the BMBF Contract No. 05P18RDCIA ; the Max-Planck Society, the Helmholtz International Center for FAIR (HIC for FAIR); the EU Horizon 2020 research and innovation programme through ENSAR2 (no. 654002 ), NSERC under grants SAPIN-2018-00027 and RGPAS-2018-522453 and the Arthur B. McDonald Canadian Astroparticle Physics Research Institute . TRIUMF receives funding via a contribution through the National Research Council of Canada and computations of VS-IMSRG were performed with an allocation of computing resources on the Cedar at WestGrid and Compute Canada.

Keywords

  • Ab-initio calculation
  • Collinear laser spectroscopy
  • Electromagnetic moments
  • Nucleon-nucleon correlation

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