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Characterization & Correction of Self-Absorption Distortion in XANES.
- Source :
-
Columbia Undergraduate Science Journal . Spring2020, Vol. 14, p9-20. 12p. - Publication Year :
- 2020
-
Abstract
- X-ray absorption spectroscopy (XAS) is an experimental technique used to probe the atomic properties of materials. XAS measurements performed in fluorescence mode are subject to so-called "self-absorption" distortion, especially when the sample under investigation is thick or concentrated with respect to the atom of interest. Here we investigate the behavior of self-absorption and present several suggestions to avoid and manage self-absorption through experimental design. Particularly, we find that it is easier to correct for very thick samples than for samples of intermediate thickness. Self-absorption distortion necessitates a correction of the measured spectrum during data processing. We present a technique for correcting self-absorbed spectra in the XANES region that is effective for all sample thicknesses and experimental geometries. [ABSTRACT FROM AUTHOR]
- Subjects :
- *X-ray absorption
*ATOMS
*INFORMATION storage & retrieval systems
Subjects
Details
- Language :
- English
- ISSN :
- 1932765X
- Volume :
- 14
- Database :
- Academic Search Index
- Journal :
- Columbia Undergraduate Science Journal
- Publication Type :
- Academic Journal
- Accession number :
- 148795296