IONIZATION OF ALUMINUM K SHELL BY LOW-ENERGY HYDROGEN AND HELIUM IONS

The yields for characteristic K-shell x rays in aluminum are measured as produced by H1, He3, and He4 ions in the energy range 25-200 keV. The ionization cross sections deduced from these data are in detailed agreement with the theory, if the Coulomb deflection of the incoming particle by the target nucleus and the binding of the K-shell electrons to the incoming particle are included in the Born approximation. © 1969 The American Physical Society.