Nuclear symmetry energy from the Fermi-energy difference in nuclei

Abstract

The neutron-proton Fermi-energy difference and the correlation to nucleon separation energies for some magic nuclei are investigated with the Skyrme energy density functionals and nuclear masses, with which the nuclear symmetry energy at sub-saturation densities is constrained from 54 Skyrme parameter sets. The extracted nuclear symmetry energy at sub-saturation density of 0.11 fm${}^{-3}$ is 26.2 $\pm$ 1.0 MeV with 1.5 $\sigma$ uncertainty. By further combining the neutron-skin thickness of 208Pb, ten Skyrme forces with slope parameter of 28<L<65 are selected for the description of the symmetry energy around saturation densities.

7 figures, 1 table, accepted for publication in Phys. Rev. C

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• Density-dependent symmetry energy at subsaturation densities from nuclear mass differences
• Microscopic dynamics simulations of multi-nucleon transfer in ${}^{86}$Kr+${}^{64}$Ni at 25 MeV/nucleon
• Collective Flow Global Collective Flow in Heavy Ion Reactions from the Beginnings to the Future
• New quantification of symmetry energy from neutron skin thicknesses of ${}^{48}$Ca and ${}^{208}$Pb
• Symmetry Energy from Two-Nucleon Separation Energies of Pb and Ca Isotopes
• Effects of incompressibility $K_0$ in heavy-ion collisions at intermediate energies
• A new probe to study symmetry energy at low density by deuteron breakup reaction
• Neutron-proton differential transverse flow in ${}^{132}$Sn + ${}^{124}$Sn collisions at 270 MeV/nucleon
• Density Dependence of Nuclear Symmetry Energy
• Neutron Star Radii from Laboratory Experiments
• Kaon production in the HADES experiment in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=2.4$ GeV