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![[Figure 1]](yn5131fig1mag.jpg)
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Figure 1
X-ray beam path. (a) Scaled drawings of components along the X-ray beam path: pinhole array, collimator tip, sample-filled capillary, 12 µm thick polyimide film with 500 µm pinhole, partially transmissive beamstop bonded to a 100 µm thick polyimide film, and X-ray detector. The X-ray beam passes through a 75 µm × 150 µm (V × H) pinhole cut in a 50 µm thick tungsten wafer, through a brass collimator tip with a 150 µm aperture, and then through the sample. The 2.5 mm gap between the collimator tip and the sample is drawn to scale, but the 186 mm distance between the sample and detector plane is not. A small portion of the X-ray beam leaks through the 3.7 mm long, 0.51 mm OD partially transmissive PT beamstop and impinges on the detector. The shadow cast on the detector by the beamstop defines qmin, which is just under 0.02 Å−1 with 12 keV photons. (b) Scaled drawing of the Rayonix MX340-HS detector with a helium-purged pyramid mounted in front. The ribbed structure supporting the pyramid is designed to position the apex and base polyimide films 2.5 mm and 90 mm downstream from the capillary, respectively. The position of the beamstop relative to the detector is controlled by manual X and Y micrometres attached to the ribbed structure (not shown). (c) The asymmetric pink-beam spectrum, recorded with a Si 111 channel-cut monochromator, is peaked near 12 keV and has a FWHM of approximately 3%. |
![[Figure 1]](yn5131fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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