Divergence of the diffusion flux, div(ℱ_tot), predicted by the multi-component Landau Eq. (47)and following the conventions from Fig. 6. Left panel: for the population “a” of light wires of individual mass μ_a = 1. The maximum value for the positive blue contours is given by , while the minimum value for the negative red contours reads . Right panel: for the population “b” of heavy wires of individual mass μ_b = 10. The maximum and minimum values for the contours are given by and . Wires are initially distributed according to similar DFs, but undergo a mass segregation on secular timescales. Light wires get larger eccentricity (smaller L), while heavy wires circularise (larger L).