x-ray absorption near-edge structure

x-ray absorption near-edge structure

[′eks ‚rā əb′sȯrp·shən ¦nir ‚ej ′strək·chər]
(physics)
A ripplelike structure in the x-ray absorption spectrum of a substance, at energies just above the absorption edge associated with liberation of core electrons into the continuum, and much closer to the absorption edge than the energies associated with extended x-ray absorption fine structure. Abbreviated XANES.
References in periodicals archive ?
Developed at the University of Washington, FEFF is an automated program for ab initio multiple scattering calculations of X-ray Absorption Fine Structure (XAFS) and X-ray Absorption Near-Edge Structure (XANES) spectra for clusters of atoms.