Recommended Physics List for 0–50 keV Electron Energy Loss Study in Thin Materials

Geant4 Version: geant4-v11.2.2
Operating System: macos
Compiler/Version: Apple clang version 15.0.0 (clang-1500.3.9.4)
_CMake Version:_cmake version 3.28.3


Dear Geant4 Community,

I am working on a simulation where I send monoenergetic electrons (initially 20 keV, but potentially within the 0–50 keV range) into a target material with varying thickness. My goal is to investigate the energy loss of these electrons as a function of material thickness.

Could you please advise on which physics list is most appropriate for modeling electron-material interactions in the low-energy (0–50 keV) range?

Specifically, I am interested in:

  • Accurate modeling of energy loss (including inelastic scattering, ionization, and possible backscattering)

Would something like G4EmLivermorePhysics or G4EmPenelopePhysics be more suitable for such low-energy applications? and which example should i be using suitable for my task in mind?

Any recommendations on production cuts or additional considerations would also be highly appreciated.

Thank you in advance for your guidance.

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