The effects of self-fields on the electron trajectory in a two-stream free electron laser with a hel

• 作 者: S.Saviz E.Lashani Farzin M.Aghamir
• 机 构: Plasma Physics Research Center,Science and Research Branch,Islamic Azad University,Tehran,P.O.Box 14
• 出 处: Chinese Physics B
• 发表日期: 2012年10期
• 关键词: helical trajectory instead normalized numerically guiding axial coherent chaos r

A theory for the two-stream free-electron laser(TSFEL) with a helical wiggler and an axial guide magnetic field is developed.In the analysis,the effects of self-fields are taken into account.An analysis of the two-stream steady-state electron trajectories is given by solving the equation of motion.Numerical calculations show that there are seven groups of orbits in the presence of self-fields instead of two groups reported in the absence of self-fields.The stability of the trajectories is studied numerically.

A theory for the two-stream free-electron laser (TSFEL) with a helical wiggler and an axial guide magnetic field is developed. In the analysis, the effects of self-fields are taken into account. An analysis of the two-stream steady -state electron trajectories is given by solving the equation of motion. Numerical calculations show that there are seven groups of orbits in the presence of self-fields instead of two groups reported in the absence of self-fields. The stability of the trajectories is studied. numerically.