which was then used in the discrete Debye-formulation on all solute distances , effectively using the solute-atomic positions to approximate the size and shape of the excluded volume. The solute in the original study of Panman et al. was comprised of particles of a single atom type, but as we observed in fig. , when different atom types make up the solute, the excluded volume experienced by each atom type can be slightly different, thus requiring an f l,EV (q) per atom type l ∈ u. Due to the equivalence of the discrete Debye equation and eq. 3 , we can generalize this procedure to obtain the excluded-volume scattering from solute-solute radial distribution functions: