Superdeformation in 68Zn: Evidence for a New, Neutron-rich Island of Superdeformation in A~70 Nuclei

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A superdeformed rotational structure is reported in the stable nucleus Zn-68. It has a transition quadrupole moment (Q(t)) of 2.5(-0.4)(+0.7) e b (beta(2) approximate to 0.4), as measured by the residual Doppler shift method. Theoretical calculations suggest that two different configurations are possible candidates for this band. One is built without h(11/2) neutrons, as seen in superdeformed bands in the A similar to 60 region, while the other involves one h(11/2) neutron in analogy with superdeformed bands in the A similar to 80 region. The second of these candidate configurations is preferred, thus establishing a new, neutron-rich (relative to the line of beta stability) region of superdeformation with Z similar to 30 and N similar to 38.


  • M. Devlin
  • A. V. Afanasjev
  • R. M. Clark
  • D. R. LaFosse
  • I. Y. Lee
  • F. Lerma
  • A. O. Macchiavelli
  • R. W. MacLeod
  • I. Ragnarsson
  • P. Ring
  • Dirk Rudolph
  • D. G. Sarantites
  • P. G. Thirolf
External organisations
  • Ludwig-Maximilian University of Munich
  • University of Washington
  • Lund University
  • Technical University of Munich
  • Lawrence Berkeley National Laboratory
  • Washington University in St. Louis
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)5217-5220
JournalPhysical Review Letters
Publication statusPublished - 1999
Publication categoryResearch

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