Sensitivity of deexcitation energies of superdeformed secondary minima to the density dependence of symmetry energy with the relativistic mean-field theory

Abstract

The relationship between deexcitation energies of superdeformed secondary minima relative to ground states and the density dependence of the symmetry energy is investigated for heavy nuclei using the relativistic mean field (RMF) model. It is shown that the deexcitation energies of superdeformed secondary minima are sensitive to differences in the symmetry energy that are mimicked by the isoscalar-isovector coupling included in the model. With deliberate investigations on a few Hg isotopes that have data of deexcitation energies, we find that the description for the deexcitation energies can be improved due to the softening of the symmetry energy. Further, we have investigated deexcitation energies of odd-odd heavy nuclei that are nearly independent of pairing correlations, and have discussed the possible extraction of the constraint on the density dependence of the symmetry energy with the measurement of deexcitation energies of these nuclei.

14 pages, 3 figures

References in corpus (6)

• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• The effective force NL3 revisited
• Systematics of pion emission in heavy ion collisions in the 1A GeV regime
• Pygmy dipole resonance as a constraint on the neutron skin of heavy nuclei
• Equation of state of isospin-asymmetric nuclear matter in relativistic mean-field models with chiral limits
• Charge density of light exotic nuclei and $\rho NN$ tensor coupling

Cited by in corpus (2)

• Nuclear matter symmetry energy and the symmetry energy coefficient in the mass formula
• Equation of state and hybrid star properties with the weakly interacting light U-boson in relativistic models