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![[Figure 5]](he5286fig5mag.jpg)
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Figure 5
An X-ray small-angle diffraction pattern from dried chicken tendon collagen at BL40XU with an X-ray energy of 15 keV. The flux was ∼1.0 × 1011 counts s−1. The specimen-to-detector distance was 2.8 m. (a) An image obtained by using a CMOS flatpanel detector (C7942MOD). The exposure time was 60 s. (b) Intensity distribution along the meridional axis of collagen diffraction, recorded with C7942MOD. The exposure time was 5 s. To match the spatial resolution in (c), 4 × 4 pixels were binned. Thus, each pixel is 0.2 mm in size. Dark current was subtracted. The profile was corrected for defect pixels. The peaks have a tail towards the higher angle because of the energy profile of the X-rays at this beamline (Inoue et al., 2001  ). (c) The same as (b) but recorded with an X-ray image intensifier (V5445P, Hamamatsu Photonics, Hamamatsu, Japan; Amemiya et al., 1995) with a 0.2 mm-thick CsI coupled to a cooled CCD camera (C4880-50-24A, Hamamatsu Photonics). An aperture number 9 was used. The intensity distribution in the region similar to that in (b) is shown. The pixel size on the detection window was about 0.22 mm. The exposure time was 5 s. Some peaks in (b) and (c) appear different in height because the sampling points of the pixels are not exactly the same in the two profiles. |
![[Figure 5]](he5286fig5.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
