A researcher and educator in X-ray absorption fine structure. His tutorial connects the measured X-ray absorption spectroscopy oscillations with the scattering of a photoelectron by neighboring atoms. The resulting analysis estimates neighboring distances and coordination, making the technique useful for studying local structure even when a sample lacks the long-range order needed for ordinary crystallography.[ref]
Fundamentals of XAFS by Matthew Newville. Physical description of photoelectron interference and EXAFS parameters R and N
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