Figure 6
(a) Histogram of a region in the middle of the Ni wire of the difference tomogram, calculated from the delta tomograms [equation (6)]. From this histogram, the atomic density of Ni can be calculated by dividing by the difference of the f′ values at the different energies. (b) Comparison of atomic densities of Ni, calculated from the delta tomograms at different energies and from the difference tomogram; the horizontal line indicates the reference value. |