Diffraction and X-ray absorption spectroscopy
Diffraction et Spectroscopie d'Absorption des Rayons-X
Résumé
X-ray/neutron diffraction and X-ray absorption spectroscopy are complementary experimental techniques giving pair distribution functions. There are selective tools to obtain structural information, probing short and medium ranges (up to typically 1nm), such as coordination, bond distances but also valence state, even at a dilute concentration. Moreover, spatial or time resolution, specific environments (high pressure/temperature, controlled atmosphere) can be achieved. In this chapter, the theoretical basis of each techniques is given and case studies applied to glasses are used to illustrate the structural information that can be extracted.
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