COMPTON SCATTERING FROM X-RAY STANDING WAVE FIELD

Compton scattering, a well-established technique to probe electron momentum distributions in solids, demonstrates new features when the scattering occurs in the field of an X-ray standing wave (XSW). The theory of the coherent Compton effect in the Bragg and the Laue cases of the two-beam dynamical diffraction is presented. Differential and integrated over energy Compton scattering cross-sections are discussed and their angular dependences analyzed. It is shown that the sensitivity to electron distribution can be enhanced when using highly asymmetrical Bragg diffraction. The advantages of the Laue case are demonstrated.