A Computer Study of Electron-Electron Interaction in high Density Electron Beams

摘要

High density electron beams are simulated by a computer, and the trajectory displacement and energy broadening caused by electron-electron interaction are investigated computationally. The results are summarized into two empirical formulas which represent dependences ofudthe average trajectory displacement and the average energy broadening on the beam parameters. The results show that the trajectory displacement caused by electron-electron interaction imposes a severe problem onudsystem designers using high density beams, and that energy broadening on the order of 1eV may well be attributed to electron-electron interaction. The method of simulation is also described.