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.