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Neutron reflectivity profiles of a Bragg mirror consisting of 25 bilayers of Ni/Ti at Δλ/λ = 1% (red), Δλ/λ = 5% (blue) and Δλ/λ = 12% (green). The solid lines are the fits to each data set. The data are offset for clarity. The lower panel shows the residuals between the data and fits normalized to Q 4. (Inset) The corresponding real-space SLD profile from the fit in the Δλ/λ = 1% case.
