Extended X-ray absorption fine structure
= Extended X-ray absorption fine structure
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= EXAFS
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Oscillatory absorption above a core-ionization edge caused by <interference> between outgoing and neighbor-scattered <photoelectron> waves. It probes local coordination, distances and disorder. The high-energy shell expansion is distinct from the more complicated near-edge regime; phase corrections are required before interpreting Fourier-transform peaks as bond lengths.