Abstract
A fully relativistic electron-impact ionization cross section is calculated as a triple partial-wave expansion of the first Born scattering amplitude. The target atomic ion is described by a Dirac-Fock approximation, a jj subconfiguration average method is used to calculate the scattering algebra, and the radial partial waves (epsilon-clj) are computed in distorted-wave potentials. The resulting general computational scheme is applied to electron-impact ionization of U/sup 89+/. The fully relativistic cross-section results are compared with those obtained from both nonrelativistic and semirelativistic theories.
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