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X-ray diffraction

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X-ray diffraction

Method of studying the atomic and molecular structure of crystalline substances by using X-rays. X-rays directed at such substances spread out as they pass through the crystals owing to diffraction (the slight spreading of waves around the edge of an opaque object) of the rays around the atoms. By using measurements of the position and intensity of the diffracted waves, it is possible to calculate the shape and size of the atoms in the crystal. The method has been used to study substances such as DNA that are found in living material.
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An X-ray diffraction (XRD) system transmits X-ray beams to a sample (generally a single crystal, metallic solid or a powder) and records the diffraction pattern that occurs when the X-ray photons encounter the inter-atomic gaps within the crystal structure.
XRD flourishes in a broad market by Instrument Business Outlook
Over the years, X-ray diffraction has been a powerful and reliable technique to obtain information about the microstructure, such as crystallinity, crystalline orientation, and crystalline interplanar spacing, in the films (5-7).
Real-time wide-angle X-ray diffraction during polyethylene blown film ... by Gururajan, Giri; Shan, H.; Lickfield, G.; Ogale, A.A. / Polymer Engineering and Science
A few examples of topics covered include three-dimensional visualization in powder diffraction, full pattern methods for the analysis of plastically deformed materials, quasiperiodic photonic and phononic crystals, x-ray diffraction and electric measurements of phase transformation in Li-Mn spinels, and gradients of parameters of the real structure in steel surface layers after mechanical treatment.
Applied crystallography XX by SciTech Book News
 
 
 
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