## 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 2_{1.2}^{+} 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 ^{94}Mo and a quadrupole d-boson ratio n_{d}(0_{1}^{+})/n_{d}(2_{2}^{+} )≈0.6 is obtained in a largely parameter-independent way.

Original language | American 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 |