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Figure 2
(Left) Image of X-ray beam at the USAXS detector position on a log scale. The front-end slit size was 30 µm × 30 µm. The rectangular aperture size was (a) 20 µm, (b) 50 µm, (c) 100 µm. (d) Image without a rectangular aperture. (Right) Dependence of the intensity of the incident X-ray beam on the size of the front-end slit and that of the rectangular aperture. The size of the front-end slit (horizontal/µm × vertical/µm) is taken in the abscissa. The size of the rectangular aperture was 20 µm (circles), 50 µm (triangles), and 100 µm (diamonds). Squares show the results without a rectangular aperture.

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