Abstract
The collective model with separate neutron and proton deformations is developed. The collective motion of individual neutron and proton surfaces is reduced to the motion of the mass surface and the neutron skin. The strong coupling scheme of the neutron skin vibrations to the mass-surface motion is applied for well-deformed nuclei. The magnetic dipole excitation mode, which was discovered experimentally, is explained as theK = 1 one-phonon neutron skin vibration in a deformed nucleus. Some estimates of parameters of the model are performed. Finally, the model is confronted with the two-rotor model and the interacting boson model (IBM-2).
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On leave of absence from the Institute for Theoretical Physics, University of Warsaw, Poland
One of the authors (S.G.R.) would like to express his gratitude to the Alexander von Humboldt Foundation for reawarding him the fellowship and supporting this way his collaboration with the Institute for Theoretical Physics of the Johann Wolfgang Goethe University.
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Rohoziński, S.G., Greiner, W. Magnetic dipole excitation mode according to the collective model with separate neutron and proton deformations. Z Physik A 322, 271–279 (1985). https://doi.org/10.1007/BF01411891
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DOI: https://doi.org/10.1007/BF01411891