Cluster size distributions f(N) [cm⁻³ ] as a result of kinetic approach based on thermodynamic cluster data for clusters sizes N = 1 … 10 for α = 1 for T = 1000 K, β = 1.0 for the top two panels, and β = 10⁻⁵ for the bottom panel in order to visualise the relative importance of cluster evaporation. The differences between the cluster-monomer (top) and the cluster–cluster (bottom) results appear small for the small clusters, and are amplified if the evaporation efficiency is suppressed.