Evolution of nuclear ground-state properties of neutron-deficient isotopes around Z=82 from precision mass measurements

Ch. Böhm, Ch. Borgmann, G. Audi, D. Beck, K. Blaum, M. Breitenfeldt, R. B. Cakirli, T. E. Cocolios, S. Eliseev, S. George, F. Herfurth, A. Herlert, M. Kowalska, S. Kreim, D. Lunney, V. Manea, E. Minaya Ramirez, S. Naimi, D. Neidherr, M. Rosenbusch, L. Schweikhard, J. Stanja, M. Wang, R. N. Wolf, and K. Zuber
Phys. Rev. C 90, 044307 – Published 7 October 2014

Abstract

High-precision mass measurements of neutron-deficient Tl (A=184, 186, 190, 193–195, 198) isotopes as well as Pb (A=202,208), Fr (A=207,208), and Ra (A=224) are performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The improved precision of the mass data now allows the study of subtle odd-even effects. The gradual development of collectivity with the removal of protons from the magic Z=82 core is analyzed by combining the new mass results with nuclear charge-radii data and mean-field model predictions.

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  • Received 26 June 2014
  • Revised 1 September 2014

DOI:https://doi.org/10.1103/PhysRevC.90.044307

©2014 American Physical Society

Authors & Affiliations

Ch. Böhm1,*, Ch. Borgmann1,†, G. Audi2, D. Beck3, K. Blaum1, M. Breitenfeldt4, R. B. Cakirli1,‡, T. E. Cocolios5,6, S. Eliseev1, S. George7,§, F. Herfurth3, A. Herlert6,∥, M. Kowalska6, S. Kreim1,6, D. Lunney2, V. Manea2, E. Minaya Ramirez8,3,§, S. Naimi2,¶, D. Neidherr1,**, M. Rosenbusch9, L. Schweikhard9, J. Stanja10,††, M. Wang2, R. N. Wolf9,§, and K. Zuber10

  • 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
  • 2CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France
  • 3GSI Helmholtzzentrum GmbH, 64291 Darmstadt, Germany
  • 4Instituut voor Kern- en Stralingsfysika, KU Leuven, 3001 Heverlee, Belgium
  • 5University of Manchester, School of Physics and Astronomy, Manchester M13 9PL, United Kingdom
  • 6CERN, Physics Department, 1211 Genève 23, Switzerland
  • 7NSCL, Michigan State University, East Lansing, Michigan 48824-1321, USA
  • 8Helmholtz-Institut Mainz, 55099 Mainz, Germany
  • 9Ernst-Moritz-Arndt Universität, Institut für Physik, 17487 Greifswald, Germany
  • 10Technische Universität Dresden, 01069 Dresden, Germany

  • *christine.boehm@mpi-hd.mpg.de
  • Present address: Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 05 Uppsala, Sweden.
  • Present address: Department of Physics, University of Istanbul, 34134 Istanbul, Turkey.
  • §Present address: Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany.
  • Present address: FAIR GmbH, 64291 Darmstadt, Germany.
  • Present address: RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.
  • **Present address: GSI Helmholtzzentrum GmbH, 64291 Darmstadt, Germany.
  • ††Present address: Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany.

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Vol. 90, Iss. 4 — October 2014

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