Nuclear scissors mode with pairing
- Joint Institute for Nuclear Research (Russian Federation)
- CNRS and University Paris-Sud, Institut de Physique Nucleaire (France)
- Universitat de Barcelona, Departament d'Estructura i Constituents de la Materia Facultat de Fisica (Spain)
The coupled dynamics of the scissors mode and the isovector giant quadrupole resonance are studied using a generalized Wigner function moments method, taking into account pair correlations. Equations of motion for angular momentum, quadrupole moment, and other relevant collective variables are derived on the basis of the time-dependent Hartree-Fock-Bogolyubov equations. Analytical expressions for energy centroids and transition probabilities are found for the harmonic-oscillator model with the quadrupole-quadrupole residual interaction and monopole pairing force. Deformation dependences of energies and B(M1) values are correctly reproduced. The inclusion of pair correlations leads to a drastic improvement in the description of qualitative and quantitative characteristics of the scissors mode.
- OSTI ID:
- 21402567
- Journal Information:
- Physics of Atomic Nuclei, Vol. 71, Issue 6; Other Information: DOI: 10.1134/S1063778808060057; Copyright (c) 2008 Pleiades Publishing, Ltd.; ISSN 1063-7788
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR MOMENTUM
CORRELATIONS
EQUATIONS OF MOTION
HARMONIC OSCILLATOR MODELS
HARTREE-FOCK METHOD
ISOVECTORS
MOMENTS METHOD
NUCLEAR DEFORMATION
NUCLEAR QUADRUPOLE RESONANCE
PAIRING INTERACTIONS
PROBABILITY
RESIDUAL INTERACTIONS
TIME DEPENDENCE
WIGNER THEORY
APPROXIMATIONS
CALCULATION METHODS
DEFORMATION
DIFFERENTIAL EQUATIONS
EQUATIONS
INTERACTIONS
MATHEMATICAL MODELS
PARTIAL DIFFERENTIAL EQUATIONS
RESONANCE
TENSORS
VECTORS