Gyromagnetic Ratios and Octupole Collectivity in the Structure of the 90-96 Zr Isotopes
Date
2004
Authors
Benczer-Koller, N
Kumbartzki, G
Mertzimekis, T J
Stuchbery, Andrew
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Publisher
American Physical Society
Abstract
Shell model calculations have been performed for low-excitation states in the Zr isotopes between 90Zr and 96Zr 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 90Zr and 96Zr is sought in terms of coupling between the single-particle structure and a collective octupole vibration.
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Source
Physical Review C: Nuclear Physics
Type
Journal article