How the crystal curvature affects the rocking curve width
From GlueXWiki
In regions of a crystal where the local curvature is large along the direction perpendicular to the rocking axis, a significant part of the rocking curve peak width for a pixel can arise from variation of the peak position within the pixel. The following plots show a strong correlation between the rocking curve width and the local slope in the peak position observed with the 20 micron crystal.