Interior and exterior view of the targets for different inhomogeneities with the filling factor colour coded. The inhomogeneity increases from the homogeneous target a) to the most inhomogeneous target f). In particular, the standard deviations are φ_σ = 0 a), φ_σ = 0.01 b), φ_σ = 0.02 c), φ_σ = 0.03 d), φ_σ = 0.04 e), and φ_σ = 0.05 f). All targets have a similar pattern that originates from considering interacting particle packages in the implementation. With increasing φ_σ the maximum and minimum filling factor of the different spots increase and decrease, respectively. The projectiles have a similar appearance. The result of collisions among these aggregates with 10   m   s^-1 are depicted in Fig. 3.