@article {019_Zr9096, title = {Gyromagnetic ratios and octupole collectivity in the structure of the $^{90-96}Zr isotopes}, journal = {Phys. Rev. C}, volume = {69}, number = {4}, year = {2004}, pages = {044302{\textendash}1}, address = {Natl. Superconducting Cyclotron Lab., Michigan State University, East Lansing, MI 48824, United States}, 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.}, issn = {05562813 (ISSN)}, doi = {10.1103/PhysRevC.69.044302}, author = {Stuchbery, A.E. and Benczer-Koller, N. and Kumbartzki, G. and Mertzimekis, T. J.} }