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Figure 1
The `magic square' of scattering is expanded to show the relation between the real-space electron density ρ(r), the associated autocorrelation function γ(r) and its Fourier transforms, F(q) and I(q), respectively. When expressing γ(r) and I(q) in a spherical coordinate system, Hankel transforms relate the associated expansion coefficients. Orientation-averaged quantities in the grey column, such as SAXS data and the radial distance distribution, can be obtained by selecting curves for which l = 0. The numbers in parentheses relate key operations to the corresponding equations given in the text.

IUCrJ
Volume 2| Part 3| March 2015| Pages 309-316
ISSN: 2052-2525
doi:10.1107/S2052252515002535