Analysis of scattering rates in infinite matter simulations with only elastic collisions. Sensitivity of scattering rates to variation of different setup parameters is investigated. The number of collisions in SMASH is, in the following plots, normalized to the theoretically expected number of collisions of a dilute gas: Nevents t σ N2 Ntest <vrel> / (2 V) We therefore expect this value at ≈ 1.0.