Highly deformed band structure in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>57</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Co</mml:mi></mml:math>
W. ReviolChemistry Department, Washington University, St. Louis, Missouri 63130D. G. SarantitesChemistry Department, Washington University, St. Louis, Missouri 63130R. J. CharityChemistry Department, Washington University, St. Louis, Missouri 63130V. TomovChemistry Department, Washington University, St. Louis, Missouri 63130J. DobaczewskiChemistry Department, Washington University, St. Louis, Missouri 63130D. RudolphChemistry Department, Washington University, St. Louis, Missouri 63130R. M. ClarkChemistry Department, Washington University, St. Louis, Missouri 63130M. CromazChemistry Department, Washington University, St. Louis, Missouri 63130P. FallonChemistry Department, Washington University, St. Louis, Missouri 63130A. O. MacchiavelliChemistry Department, Washington University, St. Louis, Missouri 63130M. P. CarpenterChemistry Department, Washington University, St. Louis, Missouri 63130D. SeweryniakChemistry Department, Washington University, St. Louis, Missouri 63130
2002lv
ABI
Аннотация
Rotational bands have been found in ${}^{57}\mathrm{Co}$ using the ${}^{28}\mathrm{Si}{(}^{32}\mathrm{S},3p)$ reaction at 130 MeV. The bands, extending the mass 60 region of large deformation down to $Z=27,$ are signature-partner sequences. Their quadrupole moments are similar to those of bands in the neighboring nuclei. The features of the new bands are described by Skyrme Hartree-Fock calculations favoring a configuration assignment with one neutron and one proton excited in the respective ${1g}_{9/2}$ intruder orbital. An attempt to describe the magnetic $(M1)$ properties of the signature-partner structure is also presented.
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