[Left] Initial ensemble of alpha particle data points in the case of relaxation by instability excitation (plotted with open circles). The dynamic paths in (β_∥α, T_⊥α/T_∥α) space are indicated with magenta curves and the final states at τ_max = Ω_pt_max = 50 are marked with black dots. The background shows the alpha particle data distribution. [Right] Same but for the protons. An associated movie showing the entire dynamic paths for the ensemble points that are subject to instability excitation and quasi-linear relaxation is available online.