where γ ≥ 0 is the damping factor, controlling the Gaussian smoothing of the resulting distribution. The damping is applied because the GED scattering curves are usually too short in the s-space, and this abrupt break in the data causes strong spurious fast oscillations in the r-space. Often, γ is chosen from a condition exp(-γ • s 2 max ) = 0.1, where s max is the largest experimentally measured point. The result of the sine-FT of the sM(s) function is called the radial distribution function (RDF), and physically, it is a sum of PDFs of all atomic pairs, weighted by their scattering abilities, and divided by the interatomic distance.