Crystal grain conditions dramatically influence observed 2D XRD images, with fine grains appearing as rings and coarse grains as spots. If the intensity distributions along the rings are uniform, the corresponding phase has no preferred orientation. If the intensities appear as broken lines, the corresponding phase has preferred orientation. In the classical approach, XRD software only attempted crystal phase identification after converting a 2D diffraction image to a 1D profile. Information about grain conditions in the 2D diffraction image was not used. The Powder XRD plugin for SmartLab Studio II uses both the 2D diffraction image and the 1D profile derived from it for analysis. Using phase identification results and the 2D diffraction image together, the grain condition and orientation of each phase in a sample can be visually confirmed.
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