EM Pen

This physics list uses “Penelope” Geant4 electromagnetic physics as built by the G4EmPenelopePhysics constructor.

Specific low-energy Penelope models are used for gamma, \(e^-\), and \(e^+\) below 1 GeV. Above 1 GeV and for all other charged particles the configuration is the same as in the G4EmStandardPhysics_option4 constructor.