Energy-weighted electronuclear sum rules at constant momentum transfer are studied for light and medium-weight nuclei. For light nuclei exact wave functions obtained with realistic nuclear forces are used, while for heavier nuclei RPA results are obtained using a shell-model basis with effective forces. The Coulomb sum rule is enhanced by exchange forces, its momentum dependence reflects the range of the potential and the two-particle correlations. A multipole decomposition shows that this enhancement is mainly due to the dipole mode. The transverse sum rule is dominated by the spin current, which is also enhanced by exchange forces.

A Study of electronuclear sum rules in light and medium Weight Nuclei

Orlandini, Giuseppina;Traini, Marco Claudio;
1980

Abstract

Energy-weighted electronuclear sum rules at constant momentum transfer are studied for light and medium-weight nuclei. For light nuclei exact wave functions obtained with realistic nuclear forces are used, while for heavier nuclei RPA results are obtained using a shell-model basis with effective forces. The Coulomb sum rule is enhanced by exchange forces, its momentum dependence reflects the range of the potential and the two-particle correlations. A multipole decomposition shows that this enhancement is mainly due to the dipole mode. The transverse sum rule is dominated by the spin current, which is also enhanced by exchange forces.
2-3
V., Tornow; Orlandini, Giuseppina; Traini, Marco Claudio; D., Drechsel; H., Arenhoevel
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/69419
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