A study of elastic nucleus-nucleus scattering at intermediate energies in high-energy approximation method

The amplitudes for elastic scattering of heavy ions presented in the form of the high-energy approximation are studied using the Saxon-Woods potential. The numerical calculations for eikonals and for the 'near-' and 'far-side' amplitudes of scattering are compared with those obtained by the saddle-point method. Conclusions are made on applicability of models when parameters of potentials are selected in correspondence with the cases of strong absorption, refraction and the optical scattering. It is shown that in many cases the models are utilized out of the scope of their suitability. (author)