Effects of symmetry energy and momentum dependent interaction on low-energy reaction mechanisms
1 INFN-LNS, Laboratori Nazionali del Sud, 95123 Catania, Italy
2 Faculty of Physics, University of Bucharest, Măgurele, Romania
3 Physics and Astronomy Dept., University of Catania, Catania, Italy
Published online: 11 May 2016
We study the dipole response associated with the Pygmy Dipole Resonance (PDR) and the Isovector Giant Dipole Resonance (IVGDR), in connection with specific properties of the nuclear effective interaction (symmetry energy and momentum dependence), in the neutron-rich systems 68Ni, 132Sn and 208Pb. We perform our investigation within a microscopic transport model based on the Landau-Vlasov kinetic equation.We observe that the peak energies of PDR and IVGDR are shifted to higher values when employing momentum dependent interactions, with respect to the results obtained neglecting momentum dependence. The calculated energies are close to the experimental values and similar to the results obtained in Hartree-Fock (HF) with Random Phase Approximation (RPA) calculations.
© Owned by the authors, published by EDP Sciences - SIF, 2016
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