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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 9:28 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Theoretical Physics and Applied Mathematics
Title:
Pygmy Dipole mode within a transport approach: the role of symmetry energy
Authors:
B. Frecus (1), V. Baran (2)
Affiliation:
(1) PhD School, Physics Faculty, University of Bucharest
(2) Physics Faculty, Department of Theoretical Physics, Mathematics, Optics, Plasma, Lasers, University of Bucharest
E-mail
virbaran@yahoo.com
Keywords:
pygmy dipole mode, giant dipole resonance, Vlasov equation, symmetry energy
Abstract:
For various tin isotopes we employ a transport model based on Vlasov equation to investigate the isovector modes. We consider various initial conditions and we test if the neutron skin oscillations against the core manifest collective features. We conclude that our approach indicates the existence of a collective mode with an energy centroid around 8-9 MeV, below the value observed for the Giant Dipole Resonance for the same systems and employing similar calculations. The role of the symmetry energy on the neutron skin properties and on the dynamics of various collective modes is also discussed.
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