Electrons trajectories in electromagnetically pumped free electron laser with a constant reverse guide magnetic field

Authors: AHMAD OMAR

Abstract: An exact solution to the quartic equation in the wiggler frequency \omega_w, which represents the dispersion relation for this system, is obtained. The effects of the frequency of the wiggler \omega_w on the electron's velocities (v_{\vert \vert} and v_w) are investigated. The regions of interest for the allowed wiggler frequency \omega_w for both group I and group II electron trajectories are discussed.

Keywords: Free-Electron Laser (FEL), electromagnetic wiggler, wiggler frequency, reverse guide magnetic field

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