DIFFRACTION EFFECTS IN INNER-SHELL IONIZATION EDGES

The influences of elastic on inelastic scattering under systematic-row conditions are described in a simple way. A kinematic approach, super posing inelastic intensity-distribution profiles centered at different Bragg spots is shown to be qualitatively correct but quantitatively u nsatisfying. A model considering Bragg reflection of the fast electron before and after the inelastic scattering process and thus introducin g interference effects is in good agreement with experimental results. Experimentally, we recorded inelastic intensities in the diffraction pattern of an epitaxial copper foil using a PEELS spectrometer and obs erved energy filtered extinction contours of a copper crystal.