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Figure 4
(a) Specific surface area plotted against probe size [SSA(R) versus R] and pore size distribution [f(r)] and (b) pore volume distribution for the silica aerogel in vacuum, obtained from fits of the PDSP model to SANS data. The SSA for a probe with a radius R is defined as the sum of SSAs of all pores with radii larger than R, divided by the sample volume. |