Inelastic Resonance Emission of X Rays: Anomalous Scattering Associated with Anomalous Dispersion

Abstract

An inelastic resonance scattering of monochromatic Cu $K\ensuremath{\alpha}$ x rays incident on various targets is observed when an absorption edge of the target is just above the energy of the incident x rays. This frequency-dependent and angular-independent inelastic scattering is interpreted with the x-ray scattering theory of anomalous dispersion. Conservation-of-intensity arguments allow a comparison of the observed inelastic intensity with the real part of the anomalous dispersion corrections to the coherent atomic scattering factors for x rays.