Atomic Rayleigh scattering cross-sections and the associated anomalous dispersion in the X-ray regions

Elastic scattering cross-sections for Pd, Ag, Cd, In, Sn, Sb, Pt; Au and Pb are measured at an angle of 90 degrees in the X-ray region 5.41 less than or equal to E less than or equal to 8.04 keV. These energies fall between t he high-energy side of the L- and M-shell absorption edges of the atoms con sidered. The present atomic region is significant for solid X-rays to asses s the contribution of resonance and solid-state environmental effects. Also it is the anomalous scattering region for many of the atoms of the periodi c table. Experimental results are compared with theoretical calculations ba sed on form factor formalisms including the anomalous corrections and avail able recent S-matrix values. Based on the experimental evidence, the presen t results indicate the influence of solid-state environmental effects, the importance of anomalous corrections nearer to absorption edges, the correct ness of revised high-energy limit values; the superiority of S-matrix predi ctions over form factor values on measured elastic scattering cross-section s in the X-ray regime and also show the resonance behavior around K, L and M absorption edges.