Deformation, pairing and magnetic moments in rare-earth nuclei

The global behaviour of g-factors in the rare-earth region is examined. Magnetic moments of the 2₁⁺ states in even-even rare-earth nuclei with 60 ≤ Z ≤ 76 are calculated using the Migdal approximation for the moment of inertia. Attention is drawn to the implications of g-factors for the problem of identical bands, particularly to the application of the concept of F-spin multiplets. The magnetic properties of the heavy, transitional nuclei are discussed in terms of the possibility that the proton and neutron distributions in these soft nuclei might have different deformations.