Gyromagnetic ratios and octupole collectivity in the structure of the Zr9096 isotopes

A. E. Stuchbery, N. Benczer-Koller, G. Kumbartzki, and T. J. Mertzimekis
Phys. Rev. C 69, 044302 – Published 1 April 2004

Abstract

Shell model calculations have been performed for low-excitation states in the Zr isotopes between Zr90 and Zr96 with an emphasis on the g factors and electromagnetic decay rates for the lowest 2+ and 3 states. Overall the 2+ states are reasonably well described. In contrast, the 3 states present a puzzle because the measured g factors imply a single-particle configuration whereas the experimental E3 transition rates imply collective structures that cannot be explained by shell model calculations. A consistent description of the 3 states in Zr90 and Zr96 is sought in terms of coupling between the single-particle structure and a collective octupole vibration.

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  • Received 15 December 2003

DOI:https://doi.org/10.1103/PhysRevC.69.044302

©2004 American Physical Society

Authors & Affiliations

A. E. Stuchbery

  • Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, Australian Capital Territory 0200, Australia

N. Benczer-Koller and G. Kumbartzki

  • Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903, USA

T. J. Mertzimekis

  • National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

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Vol. 69, Iss. 4 — April 2004

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