Perpendicular (Q_⊥) and parallel (Q_∥) particle-energization rates as functions of ﹩{k}_{\perp }{\rho }_{{\rm{i}}0}﹩ for both runs. (Here, “⊥” and “∥” are measured with respect to the guide field). Rates are measured within logarithmic k_⊥-bins centered on the points shown in the plot and are normalized to the energy injected by external driving, Q_inj. For both ﹩{\beta }_{{\rm{i}}0}﹩, Q_∥ ≪ Q_⊥, with the latter peaking at ﹩{k}_{\perp }{\rho }_{{\rm{i}}0}\approx 4\mbox{--}5﹩, near where ﹩{\omega }_{\mathrm{KAW}}\approx {{\rm{\Omega }}}_{{\rm{i}}0}﹩ in both runs (see Section 3.2). Error bars indicate the variance of Q over time. As in Figures 2(g), (h), vertical dotted lines mark the values of k_⊥ at which ω_KAW ≈ Ω_i0.