| A basic introduction to x-ray processes is provided. After general remarks on the practical advantages of x rays, the derivation of the minimal-coupling Hamiltonian within nonrelativistic quantum electrodynamics is outlined. A brief discussion of dynamical processes in molecules is given. Perturbation theory is reviewed and applied to describe x-ray-induced processes. In connection with x-ray absorption, inner-shell binding energies and the photon energy dependence of the x-ray absorption cross section are discussed. In connection with x-ray scattering, atomic and molecular scattering factors are introduced, and the complex index of refraction is derived. The final topic is x-ray fluorescence and Auger decay of inner-shell-excited systems. |
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