EM LE

This physics list uses “standard” Geant4 electromagnetic physics as built by the G4EmLowEPPhysics constructor. This configuration is same as in the default G4EmStandardPhysics constructor, except several additions.

Photons: \(e^-/e^+\) pair production is implemented by the Bethe-Heitler 5D model below 80 GeV and relativistic Bethe-Heitler model above. The Compton scattering are implemented by the Monarsh University model (G4LowEPComptonModel) up to 20 MeV and by the Klein-Nishina model above 20 MeV.

For all charged particle and energies G4LowEWentzelVIModel is used for simulation of multiple scattering. The BS generator is used for simulation of bremsstrahlung angular distribution.

For protons and alpha ICRU90 data for 3 materials is used.

For ion ionisation of ions below 10 MeV/u ICRU73 model (G4IonParametrisedLossModel) is used, above 10 MeV/u the Lindhard-Sorensen model is applied (G4LindhardSorensenIonModel). Additionally, bremsstrahlung and \(e^-/e^+\) pair production are implemented for ions.