Practical method for full curved-wave theory analysis of experimental extended x-ray-absorption fine structure
Recent work has indicated that the single-scattering theory of x-ray absorption may be valid down to much closer to the edge than previously thought. It is in this region that the plane-wave approximation used in the standard extended x-ray-absorption fine structure analysis breaks down. Using a simple reformulation, we obtain modified backscattering amplitude and phase-shift functions which are similar to those of Teo and Lee but which use the full curved-wave theory for single scattering. These can then be used to analyze experimental data without any modification of those programs that presently use the functions of Teo and Lee. We also present results of using this method to compare experimental data with theoretical calculations for copper metal and NiO.
- Research Organization:
- Materials Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439
- OSTI ID:
- 6359598
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 33:2; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
BACKSCATTERING
CHALCOGENIDES
COPPER
ELEMENTS
FINE STRUCTURE
INELASTIC SCATTERING
METALS
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
PHASE SHIFT
SCALING LAWS
SCATTERING
SPECTRA
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY SPECTRA