GIANT-DIPOLE RESONANCE AND OTHER 1-EXCITATIONS

The method of moments of the Wigner distribution function is applied t o the study of 1- collective excitations of atomic nuclei using Skyrme type interactions. A set of dynamic equations describing the time evo lution of compressible nucleus characteristics is derived which yields seven energy levels, Some of them can be excited by multipole operato rs: the corresponding excitation energies and fractions of the energy weighted sum rules are compared to experimental data.