Fig. 4. Power density and its distribution between the different channels.

Power densities going into the thermal electron and lattice systems (W_e−e in green diamonds and W_e−ph in orange triangles, respectively), compared with the power going to the non-thermal electrons ($W_{ex}^{NT}$ in blue squares), all as a function of the local field. The power fraction that flows into the thermal channels (i.e. to heat the systems) is substantially larger than that going into generating non-thermal electrons