Abstract
A variant of the first Born approximation is used to calculate total electron-impact ionization cross-section. The calculations are performed for the lithium-like targets, Li, …, O5+. Wavefunction of the ejected electrons is presented by distorted wave. High-quality orthogonal initial- and final-state Hartree–Fock Slater orbitals are used to model the target wavefunctions. The wavefunctions of the initial and final states are calculated with allowance for relaxation effect. The one-electron wavefunction of the continuous spectrum for ejected electrons is obtained by using the single-configuration Hartree–Fock method. The present results are compared to available experimental measurements and theoretical calculations with the convergent close-coupling method.
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