X-ray absorption analysis

synonym: X-ray absorption spectroscopy (XAS)
initialism: XAA
https://doi.org/10.1351/goldbook.08766
Measurement principle of X-ray analysis in which the absorption spectrum is used to measure the number of atoms, species, and other parameters of chemical elements.
Notes:
  1. XAS measures changes in the linear absorption coefficient of an element in a sample as a function of incident photon energy.
  2. XAS requires a highly monochromatic (with ΔE/E≈10−4 to 10−5), high flux X-ray beam.
See also: X-ray absorption near edge structure
Source:
PAC, 2021, 93, 69. (Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)) on page 105 [Terms] [Paper]
Citation: 'X-ray absorption analysis' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08766 RIS BibTex EndNote
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