Isovector polarization of nuclei in heavy ion collisions

The influence of the Coulomb repulsion on the distribution of protons and neutrons in nuclei in peripherial heavy ion collisions are analysed. The variation of isovector component of the nuclear density, the average number of giant dipole phonons excited, during the reaction and the renormaization of the nuclear interaction potential due to redistribution of nucleons are calculated for the 208Pb+208Pb reaction at different kinetic energies. It is shown that the variation of isovector component of the nuclear density can be as high as 0.15 ρ