Charge Exchange Spin-Dipole Excitations of 90Zr and 208Pb and Neutron Matter Equation of State

Abstract

Charge exchange spin-dipole (SD) excitations of ${}^{90}$Zr and ${}^{208}$Pb are studied by using a Skyrme Hartree-Fock(HF) + Random Phase approximation (RPA). The calculated spin-dipole strength distributions are compared with experimental data obtained by ${}^{90}$Zr (p,n) ${}^{90}$Nb and ${}^{90}$Zr (n,p) ${}^{90}$ Nb reactions. The model-independent SD sum rule values of various Skyrme interactions are studied in comparison with the experimental values in order to determine the neutron skin thickness of ${}^{90}$Zr. The pressure of the neutron matter equation of state (EOS) and the nuclear matter symmetry energy are discussed in terms of the neutron skin thickness and peak energies of SD strength distributions.

26pages, 10figures

References in corpus (1)

• Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions

Cited by in corpus (10)

• Constraints on the symmetry energy and on neutron skins from the pygmy resonances in 68Ni and 132Sn
• The Giant Dipole Resonance as a quantitative constraint on the symmetry energy
• Spin-isospin resonances: A self-consistent covariant description
• Nuclear matter symmetry energy and the symmetry energy coefficient in the mass formula
• Spin-isospin nuclear response using the existing microscopic Skyrme functionals
• Constraining the density slope of nuclear symmetry energy at subsaturation densities using electric dipole polarizability in ${}^{208}$Pb
• Fragmentation of spin-dipole strength in ${}^{90}$Zr and ${}^{208}$Pb
• Quenching factor of Gamow-Teller and spin dipole giant resonances
• Finite-temperature linear response theory based on relativistic Hartree Bogoliubov model with point-coupling interaction
• Charge-exchange dipole excitations in deformed nuclei