  We study here the small-angle scattering structure factor for deterministic
fat fractals in the reciprocal space. It is shown that fat fractals are exact
self-similar in the range of iterations having the same values of the scaling
factor, and therefore in each of these ranges all the properties of regular
fractals can be inferred to fat fractals. In order to illustrate the above
findings we introduce deterministic fattened versions of Vicsek deterministic
fractals. We calculate the mono- and polydisperse structure factor and study
its scattering properties.
