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Joakim

Joakim Cederkäll

Professor

Joakim

Coulomb excitation of neutron-rich Zn isotopes: First observation of the 2(1)(+) state in Zn-80

Author

  • J. Van de Walle
  • F. Aksouh
  • F. Ames
  • T. Behrens
  • V. Bildstein
  • A. Blazhev
  • Joakim Cederkäll
  • E. Clement
  • T. E. Cocolios
  • T. Davinson
  • P. Delahaye
  • J. Eberth
  • Andreas Ekström
  • D. V. Fedorov
  • V. N. Fedosseev
  • L. M. Fraile
  • S. Franchoo
  • R. Gernhauser
  • G. Georgiev
  • D. Habs
  • K. Heyde
  • G. Huber
  • M. Huyse
  • F. Ibrahim
  • O. Ivanov
  • J. Iwanicki
  • J. Jolie
  • O. Kester
  • U. Koester
  • T. Kroell
  • R. Kruecken
  • M. Lauer
  • A. F. Lisetskiy
  • R. Lutter
  • B. A. Marsh
  • P. Mayet
  • O. Niedermaier
  • T. Nilsson
  • M. Pantea
  • O. Perru
  • R. Raabe
  • P. Reiter
  • M. Sawicka
  • H. Scheit
  • G. Schrieder
  • D. Schwalm
  • M. D. Seliverstov
  • T. Sieber
  • G. Sletten
  • N. Smirnova
  • M. Stanoiu
  • I. Stefanescu
  • J.-C. Thomas
  • J. J. Valiente-Dobon
  • P. Van Duppen
  • D. Verney
  • D. Voulot
  • N. Warr
  • D. Weisshaar
  • F. Wenander
  • B. H. Wolf
  • M. Zielinska
Show all

Summary, in English

Neutron-rich, radioactive Zn isotopes were investigated at the Radioactive Ion Beam facility REX-ISOLDE (CERN) using low-energy Coulomb excitation. The energy of the 2(1)(+) state in Zn-78 could be firmly established and for the first time the 2(+)-> 0(1)(+) transition in Zn-80 was observed at 1492(1) keV. B(E2,2(1)(+)-> 0(1)(+)) values were extracted for Zn-74,Zn-76,Zn-78,Zn-80 and compared to large scale shell model calculations. With only two protons outside the Z=28 proton core, Zn-80 is the lightest N=50 isotone for which spectroscopic information has been obtained to date. Two sets of advanced shell model calculations reproduce the observed B(E2) systematics. The results for N=50 isotones indicate a good N=50 shell closure and a strong Z=28 proton core polarization. The new results serve as benchmarks to establish theoretical models, predicting the nuclear properties of the doubly magic nucleus Ni-78.

Department/s

  • Nuclear physics

Publishing year

2007

Language

English

Publication/Series

Physical Review Letters

Volume

99

Issue

14

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

Research group

  • Nuclear Structure

ISBN/ISSN/Other

  • ISSN: 1079-7114