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

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

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Abstract

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.
Original languageEnglish
Pages (from-to)5217-5220
JournalPhysical Review Letters
Volume82
DOIs
Publication statusPublished - 1999

Bibliographical note

26

Subject classification (UKÄ)

  • Subatomic Physics

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