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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Med Phys. 2020 Dec 12;48(1):19–56. doi: 10.1002/mp.14226

FIG. 17.

FIG. 17.

Absolute differences obtained between the depth at which the energy deposited was 82% of peak, at distal Bragg Peak, calculated with Geant4 (Rd82,G4) and obtained experimentally (Rd82,exp), represented as function of the reported range in water for each beam. Left: Results for proton beams at 125, 150, 175 and 200 MeV/u; right: Results for 12C beams at 100, 200 and 400 MeV/u; here, Livermore, Penelope, Opt3 and Opt4 symbols exactly overlap. The estimated uncertainty of Rd82,G4, represented with error bars, was 50 μm in all cases (see main text for details); for 12C, symbols were larger than the error bars.