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X-ray Absorption Fine Structure in Embedded Atoms

J. J. Rehr·C. H. Booth·F. Bridges·S. I. Zabinsky
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Abstract

Oscillatory structure is found in the atomic background absorption in x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from scattering within an embedded atom, and is analogous to the Ramsauer-Townsend effect. Calculations and measurements confirm the existence of AXAFS and show that it can dominate contributions such as multi-electron excitations. The structure is sensitive to chemical effects and thus provides a new probe of bonding and exchange effects on the scattering potential.

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J. J. Rehr, C. H. Booth, F. Bridges, S. I. Zabinsky. 1994-01-03. X-ray Absorption Fine Structure in Embedded Atoms. https://doi.org/10.1103/physrevb.49.12347

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