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  2. International Centre for Diffraction Data - Wikipedia

    en.wikipedia.org/wiki/International_Centre_for...

    It also publishes the journals Advances in X-ray Analysis and Powder Diffraction. In 2019, Materials Data, also known as MDI, merged with ICDD. Materials Data creates JADE software used to collect, analyze, and simulate XRD data and solve issues in an array of materials science projects.

  3. Phosphate test - Wikipedia

    en.wikipedia.org/wiki/Phosphate_test

    The absorbance of the blue solution can be measured with a colorimeter and the concentration of phosphate in the original solution can be calculated. Alternatively, a direct (but approximate) reading of phosphate concentration can be obtained by using a Lovibond comparator. This method for phosphate determination is known as Denigés' method ...

  4. Energy-dispersive X-ray spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Energy-dispersive_X-ray...

    One peak is from the L shell of iron. Energy-dispersive X-ray spectroscopy ( EDS , EDX , EDXS or XEDS ), sometimes called energy dispersive X-ray analysis ( EDXA or EDAX ) or energy dispersive X-ray microanalysis ( EDXMA ), is an analytical technique used for the elemental analysis or chemical characterization of a sample .

  5. R-factor (crystallography) - Wikipedia

    en.wikipedia.org/wiki/R-factor_(crystallography)

    In crystallography, the R-factor (sometimes called residual factor or reliability factor or the R-value or R Work) is a measure of the disagreement between the crystallographic model and the experimental X-ray diffraction data - lower the R value lower is the disagreement or

  6. X-ray crystallography - Wikipedia

    en.wikipedia.org/wiki/X-ray_crystallography

    An X-ray diffraction pattern of a crystallized enzyme. The pattern of spots (reflections) and the relative strength of each spot (intensities) can be used to determine the structure of the enzyme. The relative intensities of the reflections provides information to determine the arrangement of molecules within the crystal in atomic detail.

  7. X-ray spectroscopy - Wikipedia

    en.wikipedia.org/wiki/X-ray_spectroscopy

    Usually X-ray diffraction in spectrometers is achieved on crystals, but in Grating spectrometers, the X-rays emerging from a sample must pass a source-defining slit, then optical elements (mirrors and/or gratings) disperse them by diffraction according to their wavelength and, finally, a detector is placed at their focal points.

  8. Particle-induced X-ray emission - Wikipedia

    en.wikipedia.org/wiki/Particle-Induced_X-ray...

    Particle-Induced X-Ray Emission or Proton-Induced X-Ray Emission (PIXE) is a technique used for determining the elemental composition of a material or a sample.When a material is exposed to an ion beam, atomic interactions occur that give off EM radiation of wavelengths in the x-ray part of the electromagnetic spectrum specific to an element.

  9. Energy-dispersive X-ray diffraction - Wikipedia

    en.wikipedia.org/wiki/Energy-dispersive_X-ray...

    Energy-dispersive X-ray diffraction (EDXRD) is an analytical technique for characterizing materials. It differs from conventional X-ray diffraction by using polychromatic photons as the source and is usually operated at a fixed angle. [1] With no need for a goniometer, EDXRD is able to collect full diffraction patterns very quickly.

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