journal menu
![[Figure 8]](tz5101fig8mag.jpg)
|
|
Figure 8
Pixel-level analysis of the Bragg spot observations. (a) Detail of one Bragg spot from a simulated image, focusing on the `shoebox' identified by DIALS as the bounding box for the signal and surrounding background. Due to Bragg's law (λ = 2dsinθ), pixels at different diffraction angles θ correspond to different X-ray wavelengths, along a line radially extending from the direct beam position. In this instance a 1 pixel dispacement corresponds to a 3.8 eV energy difference, yet the approach of this paper allows us to combine data from many spots to effectively resolve scattering factors at the electron-Volt level. (b) Two other simulated Bragg spots, along with (c) a model of each spot omitting the background scatter and shot noise. (d) As in (c), but color coding each pixel by the average X-ray energy represented by the recorded photons, and (e) separate calculations of the F2latt(S) factor contributed by four separate energy channels (7096, 7110, 7124 and 7138 eV). (e) assumes equal incident photon intensities for each channel. |
![[Figure 8]](tz5101fig8.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
Open 
access
access
