A practical guide to multiple scattering theory in EXAPS analysis

In recent years, the ability to interpret and analyze X-Ray Absorption Spectroscopy data has progressed dramatically thanks, in large part, to the rapid development of ab initio theories of the absorption spectrum. One such theory the FEFF program, has proven especially successful and is in wide use throughout the world. In this talk, I will present an outline of the real-space, multiple-scattering theory used by FEFF and explain how FEFF is applied to both the near-edge and extended portions of the absorption spectrum. This talk is intended to be both practical and accessible. It is a talk by a synchrotron experimentalist oriented for synchrotron experimentalists. (author)