Laser spectroscopy of neutron-rich tin isotopes: A discontinuity in charge radii across the N=82 shell closure

Gorges C, Rodríguez LV, Balabanski DL, Bissell ML, Blaum K, Cheal B, Garcia Ruiz RF, Georgiev G, Gins W, Heylen H, Kanellakopoulos A, Kaufmann S, Kowalska M, Lagaki V, Lechner S, Maaß B, Malbrunot-Ettenauer S, Nazarewicz W, Neugart R, Neyens G, Nörtershäuser W, Reinhard PG, Sailer S, Sánchez R, Schmidt S, Wehner L, Wraith C, Xie L, Xu ZY, Yang XF, Yordanov DT (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Review Letters American Physical Society

Book Volume: 122

Article Number: 192502

Journal Issue: 19

DOI: 10.1103/PhysRevLett.122.192502

Abstract

The change in mean-square nuclear charge radii δ2© along the even-A tin isotopic chain Sn108-134 has been investigated by means of collinear laser spectroscopy at ISOLDE/CERN using the atomic transitions 5p2 S10→5p6 sP11 and 5p2 P30→5p6s P31. With the determination of the charge radius of Sn134 and corrected values for some of the neutron-rich isotopes, the evolution of the charge radii across the N=82 shell closure is established. A clear kink at the doubly magic Sn132 is revealed, similar to what has been observed at N=82 in other isotopic chains with larger proton numbers, and at the N=126 shell closure in doubly magic Pb208. While most standard nuclear density functional calculations struggle with a consistent explanation of these discontinuities, we demonstrate that a recently developed Fayans energy density functional provides a coherent description of the kinks at both doubly magic nuclei, Sn132 and Pb208, without sacrificing the overall performance. A multiple correlation analysis leads to the conclusion that both kinks are related to pairing and surface effects.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Additional Organisation(s)

Institut für Theoretische Physik

Involved external institutions

Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven BE Belgium (BE) Technische Universität Darmstadt DE Germany (DE) ELI NP Research Centre RO Romania (RO) Europäische Organisation für Kernforschung (CERN) CH Switzerland (CH) University of Manchester GB United Kingdom (GB) Michigan State University US United States (USA) (US) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE) Institut de Physique Nucléaire Orsay FR France (FR) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) GSI Helmholtzzentrum für Schwerionenforschung GmbH DE Germany (DE) The University of Liverpool GB United Kingdom (GB) Technische Universität München (TUM) DE Germany (DE)

How to cite

APA:

Gorges, C., Rodríguez, L.V., Balabanski, D.L., Bissell, M.L., Blaum, K., Cheal, B.,... Yordanov, D.T. (2019). Laser spectroscopy of neutron-rich tin isotopes: A discontinuity in charge radii across the N=82 shell closure. Physical Review Letters, 122(19). https://dx.doi.org/10.1103/PhysRevLett.122.192502

MLA:

Gorges, C., et al. "Laser spectroscopy of neutron-rich tin isotopes: A discontinuity in charge radii across the N=82 shell closure." Physical Review Letters 122.19 (2019).

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