physics pp. 515–524 Single and double ionization of gallium by electron impact

Abstract. Electron impact single and double ionization cross sections of gallium have been calcu-lated in the binary encounter approximation using accurate expression for σ∆E including exchange and interference as given by Vriens and Hartree–Fock velocity distributions for the target electrons throughout the calculations. It is concluded that the ionization of 3d shell contributes partly to single ionization and partly to double ionization. The results so obtained show reasonably good agreement with the experimental data