Fig. 114: Schematic view of the Troika beamline for using coherent X-rays (a), plus small-angle speckle patterns obtained using monochromatic (b) and "pink" (c) beam conditions. The diffraction patterns from the porous glass Vycor are shown in the wavevector range from 0 to 0.04 Å-1 horizontally and 0 to 0.02 Å-1 vertically.