Figure 3.

Comparison of the I(q_r) profiles in streaky diffraction patterns. (a) Typical example for anisotropic scattering patterns. The streak intensity profile is read out by averaging the intensity perpendicular to the streak. The readout region is defined by the azimuthal angle χ_s, the inner q_min and outer q_max scattering vector q_r and the width perpendicular to the streak w. The remaining part of the detector image is used for background correction by averaging along constant radii over the azimuthal angle. (b) Resulting streak and background signal from panel a. A gap in the data corresponds to the dead regions of the detector. The difference I_streak(q_r) – I_background(q_r) represents the intensity distribution in the streak pattern. (c) Profiles I(q_r) of different streak patterns measured on the same cell. The plots are shifted for clarity and a power-law decay ∝ q⁻³ is drawn as a guide to the eye. To see this figure in color, go online.