Fig. 3

Comparison between three model predictions, as reported in the legends, for RBE as a function of proton dose for (α/β) _x of photons of 2 Gy (upper panels) and 10 Gy (lower panels) at 1(6.5) keV/μm as reported in the left (right) column, respectively. For the LEM, predictions for two values of D _t are reported