5. Charged particle transport data, intermediate energy range and uncertainty data

5.1 Charged particle transport data

Charged particles appear as a result of nuclear or atomic interaction processes: α and β particles from radioactive processes, the recoil electron from the Compton effect or the electron-positron pair from gamma materialization. These phenomena give rise to what is known as the electromagnetic cascade, a kind of tree-like propagation of electrons, positrons and gamma rays.

The data are mainly :

• cross sections of nuclear reactions induced by charged particles ;

• effective bremsstrahlung cross-sections (or braking radiation) ;

• electron/positron scattering cross sections in matter ;

• ...