Physics Letters B (Oct 2019)
Nuclear charge radii of 62−80Zn and their dependence on cross-shell proton excitations
- L. Xie,
- X.F. Yang,
- C. Wraith,
- C. Babcock,
- J. Bieroń,
- J. Billowes,
- M.L. Bissell,
- K. Blaum,
- B. Cheal,
- L. Filippin,
- K.T. Flanagan,
- R.F. Garcia Ruiz,
- W. Gins,
- G. Gaigalas,
- M. Godefroid,
- C. Gorges,
- L.K. Grob,
- H. Heylen,
- P. Jönsson,
- S. Kaufmann,
- M. Kowalska,
- J. Krämer,
- S. Malbrunot-Ettenauer,
- R. Neugart,
- G. Neyens,
- W. Nörtershäuser,
- T. Otsuka,
- J. Papuga,
- R. Sánchez,
- Y. Tsunoda,
- D.T. Yordanov
Affiliations
- L. Xie
- School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
- X.F. Yang
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; Corresponding author.
- C. Wraith
- Oliver Lodge Laboratory, Oxford Street, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- C. Babcock
- Oliver Lodge Laboratory, Oxford Street, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- J. Bieroń
- Instytut Fizyki imienia Mariana Smoluchowskiego, Uniwersytet Jagielloński, ul. prof. Stanisława Łojasiewicza 11, Kraków, Poland
- J. Billowes
- School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
- M.L. Bissell
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
- K. Blaum
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
- B. Cheal
- Oliver Lodge Laboratory, Oxford Street, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
- L. Filippin
- Chimie quantique et photophysique, Université libre de Bruxelles, B 1050 Brussels, Belgium
- K.T. Flanagan
- School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom; Photon Science Institute Alan Turing Building, University of Manchester, Manchester M13 9PY, United Kingdom
- R.F. Garcia Ruiz
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
- W. Gins
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- G. Gaigalas
- Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, LT-10222 Vilnius, Lithuania
- M. Godefroid
- Chimie quantique et photophysique, Université libre de Bruxelles, B 1050 Brussels, Belgium
- C. Gorges
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany; Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
- L.K. Grob
- Experimental Physics Department, CERN, CH-1211 Geneva 23, Switzerland; Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
- H. Heylen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany; Experimental Physics Department, CERN, CH-1211 Geneva 23, Switzerland
- P. Jönsson
- School of Technology, Malmö University, Sweden
- S. Kaufmann
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
- M. Kowalska
- Experimental Physics Department, CERN, CH-1211 Geneva 23, Switzerland
- J. Krämer
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
- 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, Universität Mainz, D-55128 Mainz, Germany
- G. Neyens
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; Experimental Physics Department, CERN, CH-1211 Geneva 23, Switzerland
- W. Nörtershäuser
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
- T. Otsuka
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA
- J. Papuga
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001 Leuven, Belgium
- R. Sánchez
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- Y. Tsunoda
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- D.T. Yordanov
- Institute de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay, France
- Journal volume & issue
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Vol. 797
Abstract
Nuclear charge radii of 62−80Zn have been determined using collinear laser spectroscopy of bunched ion beams at CERN-ISOLDE. The subtle variations of observed charge radii, both within one isotope and along the full range of neutron numbers, are found to be well described in terms of the proton excitations across the Z=28 shell gap, as predicted by large-scale shell model calculations. It comprehensively explains the changes in isomer-to-ground state mean square charge radii of 69−79Zn, the inversion of the odd-even staggering around N=40 and the odd-even staggering systematics of the Zn charge radii. With two protons above Z=28, the observed charge radii of the Zn isotopic chain show a cumulative effect of different aspects of nuclear structure including single particle structure, shell closure, correlations and deformations near the proposed doubly magic nuclei, 68Ni and 78Ni. Keywords: Zinc, Nuclear charge radii, Shell closure, Nuclear deformation, Correlations
