Plasma Effects in a Free Electron Laser

IEEE Trans. Plasma Sci. 18, 466 (1990)https://ireap.umd.edu/10.1109/27.559161990Journal ArticlePlasma, Accelerator, and Nuclear Physics

The introduction of a plasma and a strong guide magnetic field in a free electron laser (FEL) slows down the phase velocity of radiation, significantly reducing the requirements on beam energy for generating frequencies below the electron-cyclotron frequency ( omega /sub 1/or approximately=17 kA