Circular-polarized ion channel laser with axial guiding magnetic field

摘要: The ion-channel laser (ICL), which make use of an electromagnetic instability ion-focused relativistic electron beam, is a new form free-electron laser. In this paper, we introduce cyclotron beam into the ion channel and study circular polarized (CPICL) with axial guiding magnetic field. Using 3D fluid theory, dispersion relation CPICL has been derived. A kind radiation mode-ion electrostatic gyro-penitron mode--is found, growth rate mode obtained for first time. effect field on also investigated.