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(a) Simulated R1ρ dispersions for an array of packed spheres for various radii. (b) The correlation time, calculated from the parameters of the fitted dispersion curves, increases with radius as there is more space between spheres. (c) Simulated correlation times are plotted together with the experimental correlation times estimated from the dispersions of polystyrene microspheres in pure water. The curves overlap well for small radii.
