Nuclear Charge Radii of Be7,9,10 and the One-Neutron Halo Nucleus Be11

W. Nörtershäuser, D. Tiedemann, M. Žáková, Z. Andjelkovic, K. Blaum, M. L. Bissell, R. Cazan, G. W. F. Drake, Ch. Geppert, M. Kowalska, J. Krämer, A. Krieger, R. Neugart, R. Sánchez, F. Schmidt-Kaler, Z.-C. Yan, D. T. Yordanov, and C. Zimmermann
Phys. Rev. Lett. 102, 062503 – Published 13 February 2009

Abstract

Nuclear charge radii of Be7,9,10,11 have been determined by high-precision laser spectroscopy. On-line measurements were performed with collinear laser spectroscopy in the 2s1/22p1/2 transition on a beam of Be+ ions. Collinear and anticollinear laser beams were used simultaneously, and the absolute frequency determination using a frequency comb yielded an accuracy in the isotope-shift measurements of about 1 MHz. Combining this with accurate calculations of the mass-dependent isotope shifts yields nuclear charge radii. The charge radius decreases from Be7 to Be10 and then increases for the halo nucleus Be11. When comparing our results with predictions of ab initio nuclear-structure calculations we find good agreement. Additionally, the nuclear magnetic moment of Be7 was determined to be 1.3995(5)μN and that of Be11 was confirmed with an accuracy similar to previous β-NMR measurements.

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  • Received 6 September 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.062503

©2009 American Physical Society

Authors & Affiliations

W. Nörtershäuser1,2, D. Tiedemann2, M. Žáková2, Z. Andjelkovic2, K. Blaum3, M. L. Bissell4, R. Cazan2, G. W. F. Drake5, Ch. Geppert1,6, M. Kowalska7, J. Krämer2, A. Krieger2, R. Neugart2, R. Sánchez1, F. Schmidt-Kaler8, Z.-C. Yan9, D. T. Yordanov3, and C. Zimmermann6

  • 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
  • 2Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
  • 3Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
  • 4Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
  • 5Department of Physics, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
  • 6Physikalisches Institut, Universität Tübingen, D-72076 Tübingen, Germany
  • 7CERN, Physics Department, CH-1211 Geneva 23, Switzerland
  • 8Quanteninformationsverarbeitung, Universität Ulm, D-89069 Ulm, Germany
  • 9Department of Physics, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 5A3

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Vol. 102, Iss. 6 — 13 February 2009

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