DAFS is not a surface science technique, but is a combination of diffraction and EXAFS or XANES. Diffracted beams can also undergo EXAFS oscillations. This technique enables the study of materials at long range and short range orders simultaneously. In a standard EXAFS experiment, all the atoms of a particular element are examined as the photon energy is swept over an absorption edge. However, in DAFS, atoms of the same element, but which occupy inequivalent sites in a crystal may be independently studied. By combining the technique with MCXD, other acronyms arise such as McDAFS and McDANES.