EXCITATION OF MULTIPHONON STATES IN RELATIVISTIC HEAVY-ION COLLISIONS

One- and two-step Coulomb excitation cross sections of the double-phon on giant dipole resonance states are calculated in a semiclassical for malism. The contribution of nuclear interaction is shown to be small. The multipole sum rules are used to evaluate corresponding nuclear mat rix elements; the widths of final and intermediate states are taken in to account. The recent experimental data are discussed and compared to our calculations.