X-Ray Absorption Spectroscopy

• Authors: S. Mobilio
• Languages of publication: EN

Abstracts

EN

X-ray absorption spectroscopy, today widely used as a tool for structural investigations, is described. Theoretically it is shown that above an absorption edge the absorption coefficient is well approximated by a sum of terms, each one describing a particular path followed by the photoelectron outgoing from the atom. Such geometrical feature allows to use X-ray absorption spectroscopy for structural investigations. The data analysis procedures are outlined. Applications of the single scattering region, generally known as EXAFS to semiconductors alloys, to metallic clusters and to the crystallization of amorphous metallic glasses are illustrated. Multiple scattering calculations and their relation to experimental spectra is discussed in the case of Mn ions in solution. Application of the multiple scattering to determine the three-body correlation function in a-Si:H is shown.

Keywords

EN

07.85.+n; 78.70.Dm

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1994
• Volume: 86
• Issue: 5
• Pages: 645-661

Dates

published

1994-11

Contributors

author

S. Mobilio

• Dipartimento di Energetica Universita' de L'Aquila, Roio Monteluco 67100 L'Aquila, Italy and Laboratori Nazionali di Frascati, via E. Fermi 40, 00044 Frascati, Italy