Abstract
The isotopic evolution of the relationship between the symmetry energy at saturation density of nuclear matter (J ), neutron skin thickness (ΔR ) and relevant observables related to isovector dipole excitations in neutron rich 116−136 Sn isotopes has been investigated in the framework of relativistic nuclear energy density functional theory. The description employs a family of effective interactions with density dependent meson-nucleon couplings (DDME) spanning the range of values J = 30 − 38 MeV.
Highlights
Collective excitations in neutron rich nuclei contain valuable information which allow to investigate the properties of symmetry energy of the nuclear equation of state
Using relativistic nuclear energy density functional (EDF) in describing both the nuclear matter properties as well as collective excitations in finite nuclei, a direct link can be established between the symmetry energy at saturation density (J), the neutron skin thickness (ΔR) and observables related to nuclear collective motion in neutron rich nuclei
With regards to the recent measurements of the E1 response of the neutron rich side of the Sn isotope chain carried out using the LAND-R3B setup at GSI in Darmstadt, for which the analysis in under way, it is useful to examine how sensitive these observables are to variations in the symmetry energy in a systematic way
Summary
Collective excitations in neutron rich nuclei contain valuable information which allow to investigate the properties of symmetry energy of the nuclear equation of state. Using relativistic nuclear energy density functional (EDF) in describing both the nuclear matter properties as well as collective excitations in finite nuclei, a direct link can be established between the symmetry energy at saturation density (J), the neutron skin thickness (ΔR) and observables related to nuclear collective motion in neutron rich nuclei.
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