Derivative corrections to the symmetry energy and the isovector dipole-resonance structure in nuclei,
J. P. Blocki, A. G. Magner, and P. Ring,
Keywords
nuclear binding energy, liquid drop model, extended Thomas–Fermi approach, surface symmetry energy, neutron skin, isovector stiffness
Abstract
The effective surface approximation is extended accounting for derivatives of the symmetry energy density per particle. The new expressions for the isovector surface energy constants are used for calculations of improved energies and sum rules of the isovector dipole-resonance strength structure within the Fermi-liquid droplet model. Our results are in reasonable agreement with experimental data and with other theoretical approaches.
