|A set of models are available in the Geant4
Simulation Toolkit to describe the interactions of photons, electrons, hadrons and ions with matter down to low energies.
These models are implemented in the toolkit to extend the coverage of electromagnetic interactions of photons and electrons down to 250 eV, and of protons, ions and antiprotons down to <1 keV.
Specialised models taking into account photon polarisation are also included in Geant4 Low Energy Electromagnetic package.
Applications of such models range from high energy physics experiments to space science and astrophysics to the medical field.