Borovs'ka L. Polarizability of weakly-bound light ions in the Coulomb field of the heavy nuclei.

Thesis deals with the investigation of the polarizability process contribution to the weakly-bound light nuclei elastic scattering by the Coulomb field of the heavy nuclei. The adiabatic theory for the deuteron-like nuclei in the external electric field has been developed. It is shown that varied parameter free the elastic scattering cross-sections of 6He nuclei by 209Bi nuclei near the Coulomb barrier with the dynamic Coulomb polarizability potential calculations are in good agreement with the experimental data. The criterion of adiabatic approximation for the weakly-bound light ions scattering by the Coulomb field of the heavy nuclei is found out. The quasiclassical expression for Green's function of two non-interacting particles (one of which is charged) in the external electrical field has been obtained. Non-adiabatic effect of the interior motion of the clusters in "deuteron" on its elastic scattering amplitude has been taken into account.