APS / XOR XAFS beamline evaluation
The APS beamline evaluation was carried out by the Beamline Evaluation Group
BEAMLINE |
DATA |
LAB BOOK NOTES |
RESULTS |
PHOTOS |
5-BM |
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9-BM |
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12-BM |
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20-BM |
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33-BM |
Data Processing
Mono Calibration
Summary Plot of Monochromator Calibration experiments attachment:MonoCalibrationSummaryPlot.pdf
Summary Data for Monochromator Calibration experiments attachment:MonoCalibrationSummaryData.txt
Zn Solution (noisy data)
The numerical results are shown below:
Scan |
E0 |
Edge Step |
epsilon_k |
zn05_01.chi |
9665.7189 |
0.0981006 |
0.0009736 |
zn05_02.chi |
9665.7189 |
0.1004050 |
0.0009180 |
zn09_01.chi |
9671.0000 |
0.1027941 |
0.0013858 |
zn13_01.chi |
9668.5040 |
0.0934614 |
0.0005705 |
zn13_02.chi |
9668.7460 |
0.0938051 |
0.0008412 |
zn20_01.chi |
9666.4488 |
0.1271893 |
0.0003987 |
zn20_02.chi |
9666.0854 |
0.1274453 |
0.0004710 |
zn33_01.chi |
9668.6290 |
0.1185146 |
0.0010271 |
zn33_02.chi |
9668.9400 |
0.1189671 |
0.0011380 |
The values for edge step are given as a guide -- the actual solutions used were from different batches, and so some variation is expected.
The values for "epsilon_k" (
) are the automatic estimates from IFEFFIT, and should also be taken with a grain of salt. The plot of 
below clearly shows the data from 20-BM to be the best, but the data from 5-BM, 13-BM, and 33-BM seem equally noisy to me:
