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Rotational Bands in the Doubly Magic Nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>N</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>56</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow><mml:mi>i</mml:mi></mml:math>

D. RudolphDepartment of Physics, Lund University, S-22100 Lund, SwedenC. BaktashPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831M. J. BrinkmanPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831E. CaurierInstitut de Recherches Subatomiques, CNRS-IN2P3 et Université Louis Pasteur, F-67037 Strasbourg, FranceD. J. DeanDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996M. DevlinChemistry Department, Washington University, St. Louis, Missouri 63130J. DobaczewskiDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996P.-H. HeenenH.-Q. JinPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831D. R. LaFosseChemistry Department, Washington University, St. Louis, Missouri 63130W. NazarewiczDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996F. NowackiInstitut de Recherches Subatomiques, CNRS-IN2P3 et Université Louis Pasteur, F-67037 Strasbourg, FranceA. PovesDepartamento de Fisica Teorica, Universidad Autonoma de Madrid, E-28049 Madrid, SpainL. L. RiedingerDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996D. G. SarantitesChemistry Department, Washington University, St. Louis, Missouri 63130W. SatułaDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996C.-H. YuPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

1999lv

ABI

Annotatsiya

Structures of the medium- to high-spin states in the doubly magic nucleus ${}^{56}\mathrm{Ni}$ have been investigated using the reaction ${}^{28}\mathrm{Si}{(}^{36}\mathrm{Ar},2\ensuremath{\alpha})$ and the $\ensuremath{\gamma}$-ray spectrometer Gammasphere in conjunction with the $4\ensuremath{\pi}$ charged-particle detector array Microball. Two well-deformed rotational bands have been identified. There is evidence that one of the bands, which is identical to a sequence in the odd-odd neighbor ${}^{58}\mathrm{Cu}$, partially decays via proton emission into the ground state of ${}^{55}\mathrm{Co}$. Predictions of extensive large-scale shell-model and cranked Hartree-Fock and Hartree-Fock-Bogolyubov calculations are compared with the experimental data.

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DOI: 10.1103/physrevlett.82.3763

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