XAFS is a spectroscopic technique that uses the absorption of X-rays to probe the physical and chemical structure of matter at an atomic scale. X-ray absorption spectroscopy is element-specific, in that X-rays are chosen to be at and above the binding energy of a particular core electronic level of a particular atomic species.

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.

EXAFS provides precise local structural information like bond distances, coordination number and type of neighboring atoms, and disorder in crystalline or non-crystalline systems.

This EXAFS database, which consists of just about every scan of data ever taken by Farrel Lytle, is a service of the International X-ray Absorption Society. The site is hosted by the Center for Synchrotron Radiation Research and Instrumentation at Illinois Institute of Technology.

Jun 3, 2006 · XAFS Data Library, a database of XAFS spectra, hosted at CARS XAFS Database at IIT, featuring the Farrel Lytle Database

What Is XAFS? X-ray Absorption Fine-Structure (XAFS) is the modulation of the x-ray absorption coefficient at energies near and above an x-ray absorption edge. XAFS is also referred to as X-ray Absorption Spectroscopy (XAS) and is broken into 2 regimes: XANES X-ray Absorption Near-Edge Spectroscopy EXAFS Extended X-ray Absorption Fine-Structure

Apr 11, 1997 · X-Ray Absorption Fine Structure (XAFS) refers to modulations in x- ray absorption coefficient around an x-ray absorption edge. XAFS is often divided (somewhat arbitrarily) into "EXAFS" (Extended X-ray Absorption Fine Structure) …

XAFS can be interpreted as due to scattering of the photo-electron ejected from the absorbing atom by the photo-electric effect. Cross-section is a measure of the probability of interaction between the incident photons with the material via photoabsorption or scattering processes.

What is XAFS? X-ray Absorption Fine Structure spectroscopy uses the x-ray photoelectric effect and the wave nature of the electron to determine local structures around selected atomic species in materials Unlike x-ray diffraction, it does not require long range translational order – …

Data manipulation (EXCEL, ORIGIN, Gnuplot, ....) Easy to use (not on Mac-OS!) uncertainties and error bars is a key issue for reliable understanding and discussion of XAFS results. Everything being: other absorption edges, air, sample holder, matrices, chamber windows, etc... 1. Remove pre-edge. 2. Normalization.