DO SYMMETRICAL EIKONAL AND CONTINUUM DISTORTED-WAVE MODELS SATISFY THE CORRECT BOUNDARY-CONDITIONS

We study the asymptotic convergence of initial and final wavefunctions in scattering involving Coulomb potentials. We analyse the case of io n-atom collisions at both non relativistic and relativistic energies a nd the solutions obtained by using distorted wave models. We show that the Symmetric Eikonal and the Continuum Distorted Wave models exhibit Coulomb-type residual perturbative potentials although they preserve correct boundary conditions.