Reconstruction of the radial distribution function from EXAFS: New trends and comparative analysis of different methods

In spite of the EXAFS contribution from the first shell, where multiple-scattering effects are absent in most cases, is described by the simple formalism, the development and improvement of practical procedures for the extraction of reliable structural information are still topical. In present work, the possibilities and limitations of several different methods such as model based technique [1], cumulant approach [2], splice technique [6] and recently developed model-independent method for radial distribution function determination [4,5] are discussed. A comparative analysis of the methods is presented on an example of their applications to a number of model distributions and to real crystalline and disordered systems.