ENERGY-EXCHANGE EFFECTS IN FEW-PARTICLE COULOMB SCATTERING

For the description of an arbitrary nonrelativistic three-body Coulomb system an analytical approximate wave function is designed which is c orrect for large interparticle separations. At shorter distances, wher e the potential energy dominates the kinetic one, the wave function is a linear mixture of products each consisting of three two-body Coulom b waves propagating off the two-body energy shell but on the total ene rgy shell. The method is employed for the calculations of multiply dif ferential cross sections for photo-double ionization of helium and for electron, positron, proton, and antiproton-impact ionization of atomi c hydrogen.