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  2. Rietveld refinement - Wikipedia

    en.wikipedia.org/wiki/Rietveld_refinement

    The most common powder X-ray diffraction (XRD) refinement technique used today is based on the method proposed in the 1960s by Hugo Rietveld. [2] The Rietveld method fits a calculated profile (including all structural and instrumental parameters) to experimental data.

  3. X-ray diffraction computed tomography - Wikipedia

    en.wikipedia.org/wiki/X-ray_diffraction_computed...

    X-ray diffraction computed tomography is an experimental technique that combines X-ray diffraction with the computed tomography data acquisition approach. X-ray diffraction (XRD) computed tomography (CT) was first introduced in 1987 by Harding et al. [ 1 ] using a laboratory diffractometer and a monochromatic X-ray pencil beam .

  4. Powder diffraction - Wikipedia

    en.wikipedia.org/wiki/Powder_diffraction

    This is directly related to the fact that information is lost by the collapse of the 3D space onto a 1D axis. Nevertheless, powder X-ray diffraction is a powerful and useful technique in its own right. It is mostly used to characterize and identify phases, and to refine details of an already known structure, rather than solving unknown structures.

  5. X-ray diffraction - Wikipedia

    en.wikipedia.org/wiki/X-ray_diffraction

    X-ray diffraction is a generic term for phenomena associated with changes in the direction of X-ray beams due to interactions with the electrons around atoms. It occurs due to elastic scattering , when there is no change in the energy of the waves.

  6. Verizon settlement: Here's how much some customers are getting

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    Current and former Verizon customers who purchased postpaid wireless or data service plans and were charged an "Administrative Charge" and/or an "Administrative and Telco Recovery charge" between ...

  7. College Football Playoff: Notre Dame QB Riley Leonard briefly ...

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    Steve Angeli replaced Leonard with the Irish trailing 10-0. However, Leonard was able to return at the start of the third quarter after he was evaluated for a concussion.

  8. Jalen Hurts injury update: Eagles QB suffers concussion vs ...

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    This article originally appeared on USA TODAY: Jalen Hurts concussion: Eagles QB injured vs. Commanders, ruled out. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.

  9. Clay mineral X-ray diffraction - Wikipedia

    en.wikipedia.org/wiki/Clay_Mineral_X-Ray_Diffraction

    Typically, powder X-ray diffraction (XRD) is an average of randomly oriented microcrystals that should equally represent all crystal orientation if a large enough sample is present. X-rays are directed at the sample while slowly rotated that produce a diffraction pattern that shows intensity of x-rays collected at different angles.