Comment on ‘‘Emission-angle-dependent post-collision interaction’’

Abstract
Recently Arcuni [Phys. Rev. A 33, 105 (1986)] has given a quantitative treatment of the emission-angle-dependent post-collision interaction (PCI). We show that his formula for the PCI-induced energy shift can be improved such that it is much more accurate and at the same time is valid over the whole range of projectile velocities V. We compare the analytical formula with numerical calculations of the classical three-body problem and find excellent agreement.