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Before beginning measurements, confirm the scan parameters (singles, step and time) with the Science Party. Scientists can use previous Expeditions for examples of ideal scan parameters. Generally the D4 is used to scan from 5 to 70 º2θ.
If you need to make a parameter file, please see Making a Parameter File under Maintenance and Troubleshooting. There are several parameter files from previous expeditions saved in the C:\DIFFDAT1 folder. Generally a previous expedition file is satisfactory for most expeditions. There are scan variations for Bulk samples versus Clay separations. Those parameter files are labeled accordingly in the C:\DIFFDAT1 folder. Generally clays are scanned to include much lower angles (<5 º2θ).
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