Hi guys, i have been simulating the passage of charged particles through my detector, which consist of protons, alpha particles and electrons. For the heavy particles (proton/alpha) i have assumed a straight line trajectory, since they are losing energy through ionisation and are heavy compared to the electrons they are interacting with. However, i know that low energy electrons do not travel in straight lines. Does anyone know where i can find some equations to simulate the random path of electrons as they pass through my silicon detector? Thanks. Rich.