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. 2019 Aug 19;46(10):4639–4653. doi: 10.1002/mp.13737

Table 4.

Multiple scattering models used in geant4/topas for the photon and proton simulations

Radiation field Multiple scattering model for e+/e- Multiple scattering model for primaries
1.25 MeV photons Urban model /
150 MeV protons Goudsmit–Saunderson (E ≤ 100 MeV) Wentzel VI (E > 100 MeV) Wentzel VI (E ≤ 500 MeV)