The effect of a guide field on the saturation mechanism in a two-stream free-electron laser
(FEL) is verified. Two monoenergetic electron beams with a vanishing pitch-angle spread …

The paper studies a simulation of a one-dimensional nonlinear free electron laser that
includes a square hybrid wiggler, prebunched electron beam, and ion-channel guiding …

A fluid theory is used to derive the dispersion relation of two-stream free electron laser
(TSFEL) with a magnetic planar wiggler pump in the presence of background plasma (BP) …

This paper presents a one-dimensional nonlinear simulation of a square hybrid two-stream
free electron laser (TSFEL) consisting of an axial magnetic field guide. It is supposed that the …

Efficiency enhancement in a two-stream Free Electron Laser (FEL) by a tapered wiggler
prior to saturation regime is treated. Wave-particle interaction is described by a set of …

In this paper we will investigate the effect of two-stream instability on saturation mechanism
in Two-Stream Free Electron Laser (TSFEL) with a helical wiggler pump. A two-velocity …

A numerical simulation in one-dimension is conducted to study the two-beam free electron
laser. The fundamental resonance of the fast electron beam coincides with the fifth harmonic …

A method for efficiency enhancement in free-electron laser is studied which uses both
tapered wiggler magnetic field and ion-channel density. Derivation of a set of nonlinear and …

A nonlinear and non-averaged model of a two-beam free-electron laser (FEL) wiggler that is
tapered nonlinearly in the absence of slippage is presented. The two beams are assumed to …

Efficiency enhancement in free-electron laser is studied by three-dimensional and nonlinear
simulation using tapered helical wiggler magnetic field or tapered ion-channel density. In …