In this paper, an analysis of equilibrium orbits for electrons by a simultaneous solution of the
equation of motion and the dispersion relation for electromagnetic wave wiggler in a free …

In this study, the method of perturbation has been applied to obtain the dispersion relation
(DR) of a two-stream free-electron laser (FEL) with a helical wiggler and an ion-channel with …

The Cherenkov electromagnetic instability excited by an oscillating relativistic electron beam
in ion channel has been studied. It is shown that the complex boundary with beam-ion …

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 relativistic theory for twostream free electron laser (FEL) with a onedimensional helical
wiggler and ion-channel guiding in the presence of self-fields are presented. A dispersion …

This article investigates the effects of ion-channel guiding, axial magnetic fields, helical
wiggler magnetic fields (HWMFs), and self-fields on trajectories of the elliptical relativistic …

The influence of axial magnetic field and self-fields in the electron gas column and electron
beam with elliptical cross section is investigated. Further effects of cross section demotions …

Short-wavelength light sources (VUV, DUV, EUV, and X-rays) have dramatically impacted
on material-and bio-analytics, enabling the possibility of retrieving the structure of molecules …

Dispersion relation of waves in a free electron laser with electromagnetic wiggler and ion-
channel guiding in the collective regime, is derived to study interactions among all possible …

Use of all optical switches becoming popular with flexible fiber networks; in such types of
systems, switching techniques find wide applications for network protection and …