Abstract

The author reformulates and extend the Percival-Seaton theory (1958) for inelastic electron scattering from quasi-one-electron target atoms. Special attention is given to the consequences of neglecting explicitly spin-dependent effects such as the spin-orbit interaction between the continuum electron and the target. The general theory is applied to analyse the so-called 'integrated Stokes parameters' for the light emitted after excitation by generally polarised electrons. Some tests for the validity of this simplified model are proposed and illustrated by numerical results from a semirelativistic calculation for electron-caesium scattering.

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