Detector Correction
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While using fluorescence data from a detector array, some detectors can be noisier than the others, and thus need to be excluded from the averaging. It is always advisable to check the Fluorescence from each of the individual crystals. Check the box on the left of "Plot F" and then choose the first fluorescence detector (“ge1” for this example) from the drop-down menu as shown. |
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Observe the plot after
clicking OK and if it is noisy, the readings of that particular crystal can be
ignored. To rapidly check the spectra from the other detector crystals, click
repeatedly on the "down" button next to the drop-down menu on the LX
Panel. (For an alternative method, see note below.) In the example used, data
from ge3, ge4, ge8 and ge12 were deemed noisy and omitted from averaging after
observing their plots. To do this, click on "Detector Info Table" on
the left of the LX Panel. In the table that appears, set the "det_wt"
of ge3, ge4, ge8 and ge12 to 0.
Note: If you prefer
to view or print a plot containing overlayed spectra from all the detectors
(rather than viewing them one at a time), from the Main Menu go to EXAFS123>
LX Additional Routine > LX Special Graph routine.
From the Dialogue BIx that appears, select "Fluorescence by Scan"
and hit "Continue".