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resonant scattering

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resonant scattering [′res·ən·ənt ′skad·ə·riŋ]
(quantum mechanics)
Scattering of a photon by a quantum-mechanical system (usually an atom or nucleus) in which the system first absorbs the photon by undergoing a transition from one of its energy states to one of higher energy, and subsequently reemits the photon by the exact inverse transition.


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PDF, SAXS) measurements, currently hindered by the lack of appropriate high-energy area detectors, and chemically-resolved PDF measurements involving resonant scattering.
However, this is very rarely used, as the wavelength variation is more gradual than for x-ray resonant scattering, and the absorption is more severe.
resonant scattering is usually part of a more general investigation of the crystallographic structure of a material, and reflectivity can be carried out at the absorption edges of the components of multilayers, or the kinetics of the evolution of microstructure can be investigated, etc.
 
 
 
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