Figure 9.

Energy‐dependent fluence ${\mathrm{\Phi }}_E(E)$ in water of secondary electrons binned by energy in a 1.25 MeV photon beam scored in TOPAS with the self‐programmed scorer (fluence binned by energy the particle had when generating the scoring hit; corresponding to the spectral fluence) and the default scorer fluence implemented in TOPAS (fluence binned by the energy the particle had when entering the scoring volume). [Color figure can be viewed at http://www.wileyonlinelibrary.com/]