4. Interaction mechanisms responsible for electron energy loss
Two mechanisms have been identified:
the long-range dipolar interaction couples the electron with active excitations in the infrared (plasma vibrations or oscillations); it dominates in specular reflection;
the impact interaction is short-range and allows coupling with all the elementary excitations of the solid; it is mainly observable outside specular reflection.
4.1 Dipolar scattering
Dipole diffusion is essentially a coulombic interaction between the electric field accompanying the incident electron and fluctuations in the dipole field generated by elementary excitations of the target. For the coupling to be effective, these excitations must lead to variations...
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Interaction mechanisms responsible for electron energy loss
Applications of high-resolution electron energy loss spectrometry
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