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- Are there any peaks at low Q? This may require the beamstop to be moved further from the sample. If you have a peak at Q ≤ 1 Å-1 then your local contact should be made aware before the experiment and given a friendly reminder at the start of your beamtime. Q is defined as;
- Have you simulated the pdf and the scattering data for comparison?
- Do you have .cif files that you can bring with you?
- Which of your samples are likely to be the most strongly scattering? This can be effected by the concentration of highly scattering elements, the crystallinity of the sample and the presence of large crystallites in your powder.
- Is your sample a "good" powder? Are there likely to be larger crystallites that need further grinding to give a good powder average?
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If you are providing your own cell then this needs to be discussed in detail with the local contact in order to fabricate mounting brackets and discuss sample geometry etc. In some cases a pre-visit may be required during a shutdown to check that the cell can be mounted. Alternatively the cell can be shipped in advance of the beamtime to check this.
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