Energy deposition as a function of r(s) (Eq. (31)). The deposited power per distance, dℰ/ds, is plotted along the trajectories of a representative subset of the electron beams in a simulation with δ = 4 and p = 0.2, with colours indicating the height above the photosphere. For each beam, the corresponding proportion of the initial beam power that has been deposited at each r(s), given by , is indicated by a red curve. These red curves are all overlapping.