Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-06-19
Phys.Rev.C76:024301,2007
Physics
Nuclear Physics
Nuclear Theory
26pages, 10figures
Scientific paper
10.1103/PhysRevC.76.024301
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.
Sagawa Hiroyuki
Sakai Hajime
Yako K.
Yoshida Satoshi
Zhou Xian-Rong
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