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Figure 5
Geometrical interpretation of Sq(r) in equation (23) for small radii r, and origin of the surface scattering: (a) indicator function of the colloid [{\cal I}({\bf y})]; (b) its convolution with a small sphere [{\cal I}_{r}({\bf y})]; (c) product [{\cal I}({\bf y})\times{\cal I}_{r}({\bf y})]; (d) difference between (a) and (c). The latter case describes the surface scattering that we explicitly find in equation (28).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 58| Part 5| October 2025| Pages 1553-1570
https://doi.org/10.1107/S1600576725006685
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