Abstract
A generalized M1 sum rule for orbital magnetic dipole strength from excited symmetric states to mixed-symmetry states is considered within the proton-neutron interacting boson model of even-even nuclei. Analytic expressions for the dominant terms in the B(M1) transition rates from the 21.2+ states are derived in the U(5) and SO(6) dynamic symmetry limits of the model, and the applicability of a sum rule approach is examined at and between these limits. Lastly, the sum rule is applied to the new data on mixed-symmetry states of 94Mo and a quadrupole d-boson ratio nd(01+)/nd(22+ )≈0.6 is obtained in a largely parameter-independent way.
Original language | English |
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Article number | 024319 |
Pages (from-to) | 243191-2431910 |
Number of pages | 2188720 |
Journal | Physical Review C - Nuclear Physics |
Volume | 65 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2002 |