Angular expansions 2 Born approximation 2 Charged ions 2 Continuum distorted waves 2 Cross sections 2 Distortion (waves) 2 Eikonal 2 Electric power plants 2 Electrolysis 2 Electron yields 2 First Born approximations 2 First orders 2 Harmonic analysis 2 Helium 2 High energy physics 2 Impact ionization 2 Initial states 2 Insulator surfaces 2 Ionization 2 Ionization cross sections 2 Isoelectronic series 2 Krypton 2 Lithium 2 Neon 2 Neutral targets 2 Numerical evaluations 2 Polynomial approximation 2 Proton energies 2 Proton impacts 2 Protons 2