K-shell ionization induced by slow proton and antiproton impact

Based on SCA calculations with Kepler orbits and relativistic target electron wavefunctions, the K-shell ionization caused by the low-energy proton and antiproton impacts is studied. Procedures for simulating the higher order effects are critically discussed. It is recommended to performance new experiments which would optimize the particular effects connected with antiparticle projectiles. The flatness of SCA cross sections for antiprotons in the zero energy limit might be exploited in some type of thick target experiment.