Digitization of imaging plates from Guinier powder X-ray diffraction cameras.
Jamal NasirNils SteinbrückKe XuBernward EngelenJörn Schmedt Auf der GünnePublished in: Journal of applied crystallography (2022)
A Guinier camera equipped with an imaging plate is used to investigate and eliminate the sources of instrumental errors affecting the quality of the obtained scanned Guinier data. A program with a graphical user interface is presented which converts the data of the scanned images into different standard file formats for powder X-ray patterns containing intensities, their standard deviations and the diffraction angles. The program also allows for manual and automatic correction of the 2θ scale against a known reference material. It is shown using LaB 6 that the exported X-ray diffraction patterns provide a 2θ scale reproducible enough to allow for averaging diffractograms obtained from different exposures of the imaging plate for the same sample. As shown on a mixture of NaCl and sodalite, the quality of the produced data is sufficient for Rietveld refinement. The software including source code is made available under a free software license.
Keyphrases
- high resolution
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- convolutional neural network
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- magnetic resonance
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- crystal structure
- magnetic resonance imaging
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- fluorescence imaging
- contrast enhanced