NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2005, Vol.8, No.4, pp.359-365


Dynamics of Electron Beam Instabilities under Conditions of Multiwave Distributed Feedback.
K.G.Batrakov and S.N.Sytova

Oscillation and amplification regimes of Volume Free Electron Laser (VFEL) operation under condition of multiwave volume distributed feedback (VDFB) are discussed. Electron beam instabilities in VFEL transfer it to regenerative amplification regime (first transition point), steady oscillation regime (second transition point), to nonstationary oscillation regime and through the series of transition points to chaos under increasing current. Nonstationary regime is characterized by changing of oscillation frequency in series of transition points. Some results are obtained analytically. Most part of results is produced by numerical simulation of nonlinear VFEL dynamics. Dependence of transition currents in transition (bifurcation) points on VFEL parameters is demonstrated.
Key words: Volume Free Electron Laser, quasi-Cherenkov instability

Full text:  Acrobat PDF  (1477KB)   PostScript (2068KB)   PostScript.gz (503KB)



ContentsJournal Home Page

Copyright © Nonlinear Phenomena in Complex Systems. Last updated: December 13, 2005