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What (who) is X-ray absorption fine structure - definition
X-ray absorption fine structure
SPECIFIC STRUCTURE OBSERVED IN X-RAY ABSORPTION SPECTROSCOPY
XAFS; Xafs; ΜXAFS
X-ray absorption fine structure (XAFS) is a specific structure observed in X-ray absorption spectroscopy (XAS). By analyzing the XAFS, information can be acquired on the local structure and on the unoccupied local electronic states.
Extended X-ray absorption fine structure
Extended X-ray absorption fine structure (EXAFS), along with X-ray absorption near edge structure (XANES), is a subset of X-ray absorption spectroscopy (XAS). Like other absorption spectroscopies, XAS techniques follow Beer's law.
Surface-extended X-ray absorption fine structure
SURFACE-SENSITIVE EQUIVALENT OF THE EXAFS TECHNIQUE.
SEXAFS; Surface extended X-ray absorption fine structure
Surface-extended X-ray absorption fine structure (SEXAFS) is the surface-sensitive equivalent of the EXAFS technique. This technique involves the illumination of the sample by high-intensity X-ray beams from a synchrotron and monitoring their photoabsorption by detecting in the intensity of Auger electrons as a function of the incident photon energy.
