Specific Process Knowledge/Characterization/XRD/XRD Powder/Measurement tips: Difference between revisions
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It is possible to adjust the Pulse Height Discrimination levels of the Pixcel 1D detector on our machine. This can help suppress signal from fluorescence, which is at a slightly different energy level than the pure copper K-alpha signal. The exact energy level of the fluorescence of course depends on the material you are measuring. | It is possible to adjust the Pulse Height Discrimination levels of the Pixcel 1D detector on our machine. This can help suppress signal from fluorescence, which is at a slightly different energy level than the pure copper K-alpha signal. The exact energy level of the fluorescence of course depends on the material you are measuring. | ||
Here is a comparison of a measurement with and without fluorescence suppression: | Here is a comparison of a measurement of FeOH with and without fluorescence suppression (green with fluorescence suppression, blue without, rather noisy / quick measurement done here): | ||
[[File:fluoresc supp feoh.png|400px|caption:FeOH measured with and without fluorescence suppression.]] | [[File:fluoresc supp feoh.png|400px|caption:FeOH measured with and without fluorescence suppression.]] | ||