Figure 1
From: Biological consequences of nanoscale energy deposition near irradiated heavy atom nanoparticles
Average energy deposit in the vicinity of a 20 nm gold nanoparticle after a single ionising event by a 40 keV photon.
Energy deposition is here scored in keV in concentric shells around the nanoparticle, broken down into contributions from electrons produced by different processes. In the vicinity of the nanoparticle, Auger electrons produce the dominant contribution, but this falls off rapidly as low-energy electrons are stopped, leaving only the contribution of energetic L-shell Auger electrons beyond 200 nm. Compton electrons are not plotted due to their low number, but are typically roughly 1% of the contribution of the photoelectrons.
