Physics Letters B (Jul 2024)
Electromagnetic moments of the odd-mass nickel isotopes 59−67Ni
- P. Müller,
- S. Kaufmann,
- T. Miyagi,
- J. Billowes,
- M.L. Bissell,
- K. Blaum,
- B. Cheal,
- R.F. Garcia Ruiz,
- W. Gins,
- C. Gorges,
- H. Heylen,
- A. Kanellakopoulos,
- S. Malbrunot-Ettenauer,
- R. Neugart,
- G. Neyens,
- W. Nörtershäuser,
- T. Ratajczyk,
- L.V. Rodríguez,
- R. Sánchez,
- S. Sailer,
- A. Schwenk,
- L. Wehner,
- C. Wraith,
- L. Xie,
- Z.Y. Xu,
- X.F. Yang,
- D.T. Yordanov
Affiliations
- P. Müller
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany
- S. Kaufmann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany
- T. Miyagi
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany; Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany; ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291, Darmstadt, Germany
- J. Billowes
- School of Physics and Astronomy, The University of Manchester, M13 9PL, Manchester, United Kingdom
- M.L. Bissell
- School of Physics and Astronomy, The University of Manchester, M13 9PL, Manchester, United Kingdom
- K. Blaum
- Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany
- B. Cheal
- Oliver Lodge Laboratory, Oxford Street, University of Liverpool, L69 7ZE, Liverpool, United Kingdom
- R.F. Garcia Ruiz
- Experimental Physics Department, CERN, CH-1211, Geneva 23, Switzerland
- W. Gins
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium
- C. Gorges
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany
- H. Heylen
- Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany; Experimental Physics Department, CERN, CH-1211, Geneva 23, Switzerland
- A. Kanellakopoulos
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium
- S. Malbrunot-Ettenauer
- Experimental Physics Department, CERN, CH-1211, Geneva 23, Switzerland
- R. Neugart
- Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany; Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55128, Mainz, Germany
- G. Neyens
- Experimental Physics Department, CERN, CH-1211, Geneva 23, Switzerland; KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium
- W. Nörtershäuser
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany; Corresponding author.
- T. Ratajczyk
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany
- L.V. Rodríguez
- Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany; Experimental Physics Department, CERN, CH-1211, Geneva 23, Switzerland; Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406, Orsay, France
- R. Sánchez
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291, Darmstadt, Germany
- S. Sailer
- Technische Universität München, D-80333, München, Germany
- A. Schwenk
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289, Darmstadt, Germany; Max-Planck-Institut für Kernphysik, D-69117, Heidelberg, Germany; ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291, Darmstadt, Germany
- L. Wehner
- Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55128, Mainz, Germany
- C. Wraith
- Oliver Lodge Laboratory, Oxford Street, University of Liverpool, L69 7ZE, Liverpool, United Kingdom
- L. Xie
- School of Physics and Astronomy, The University of Manchester, M13 9PL, Manchester, United Kingdom
- Z.Y. Xu
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium
- X.F. Yang
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium; School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871, Beijing, China
- D.T. Yordanov
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406, Orsay, France
- Journal volume & issue
-
Vol. 854
p. 138737
Abstract
The magnetic dipole and the spectroscopic quadrupole moments of the nuclear ground states in the odd-mass nickel isotopes 59−67Ni have been determined using collinear laser spectroscopy at the CERN-ISOLDE facility. They are compared to ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations including contributions of two-body currents as well as to shell-model calculations. The two-body-current contributions significantly improve the agreement with experimental data, reducing the mean-square deviation from the experimental moments by a factor of 3 to 5, depending on the employed interaction. For all interactions, the largest contributions are obtained for the 52− (72−) isotopes 65Ni (55Ni), which is ascribed to the high angular momentum of the f orbitals. Our results demonstrate that the inclusion of two-body-current contributions to the magnetic moment in an isotopic chain of complex nuclei can be handled by the VS-IMSRG and can outperform phenomenological shell-model calculations using effective g-factors in the nickel region.
