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Beam Spot Size in the Sample Plane
The figures below show the synchrotron beam spot size. These measurements were done by mapping out the sample plane using a 10 μm pinhole in transmission mode, with upper and lower apertures fully open. The step size was 5 μm in the XY-directions. The resulting XY intensity maps were obtained by assembling single channel traces at the specific wavenumbers shown.
Figure 1: Map of the relative intensity at 800 cm-1.
Figure 2: Relative intensity at 1500 cm-1.
Figure 3: Relative intensity at 3000 cm-1.