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XAFS in the high-energy region.

Authors
  • Nishihata, Y
  • Kamishima, O
  • Kubozono, Y
  • Maeda, H
  • Emura, S
Type
Published Article
Journal
Journal of synchrotron radiation
Publication Date
May 01, 1998
Volume
5
Issue
Pt 3
Pages
1007–1009
Identifiers
PMID: 15263727
Source
Medline
License
Unknown

Abstract

XAFS (X-ray absorption fine-structure) spectra were measured near K-absorption edges of Ce (40.5 keV), Dy (53.8 keV), Ta (67.4 keV) and Pt (78.4 keV). The blunt K-edge jump due to the finite lifetime of the core hole was observed. This makes it difficult to extract EXAFS (extended X-ray absorption fine-structure) functions at low k values. Local structure parameters can be evaluated from the EXAFS spectra above K-absorption edges in the high-energy region as well as from those above L(III)-edges. It was found that the finite-lifetime effect of the core hole is effectively taken into the photoelectron mean-free-path term, as predicted theoretically.

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