Giant Dipole Resonance and Related Spin-dependent Excitations

Abstract

The time-dependent Hartree-Fock equation is solved by the Wigner Function Moments method taking into account spin degrees of freedom. Energies and reduced transition probabilities of $K^π=0^-$, $1^-$ and $2^-$ excitations are calculated taking $^{164}$Dy as an example. The spin degrees of freedom give rise to the electric Spin Dipole Resonance. Its properties and interplay with the Giant Dipole Resonance are investigated. The deformation-induced splitting of the spin $M2$ resonance is discussed. The results of calculations are compared with the experimental data and other theoretical studies.