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2005 | 107 | 6 | 895-906
Article title

The Effect of Ion-Channel Guiding on the Chaotic Electron Trajectories in a Free Electron Laser

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EN
Abstracts
EN
It has been confirmed that when the equilibrium self-fields were taken into account, the motion of an electron in a helical wiggler with axial magnetic field may be chaotic. In this paper, the effect of an ion-channel guiding on the chaotic electron trajectories is analyzed. It is shown that the ion-channel guiding may modify the chaotic electron trajectories. It is also found that when the parameter ε, i.e. ε=ω_{pb}^2/4ω^2_c, is increased, the density of the ion-channel guiding, i.e. α_i=ω^2_{pi}/4ω^2_c, must be increased to keep the modification of the chaotic motion. The chaotic trajectories for constant parameter ε and increased density of the ion-channel guiding are presented. Numerical calculations are used to find the intersection between steady state group I and group II and resonance curves. Poincaré surface-of-section maps are generated to demonstrate the chaotic electron trajectories with axial magnetic field and its modification in the presence of an ion-channel guiding.
Keywords
EN
Publisher

Year
Volume
107
Issue
6
Pages
895-906
Physical description
Dates
published
2005-06
received
2005-02-14
Contributors
author
  • Department of Physics, Teacher Training University, Tehran, Iran
author
  • Department of Physics, Teacher Training University, Tehran, Iran
References
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  • 9. T.J. Orzechowski, B.R. Anderson, J.C. Clark, W.M. Fawley, A.C. Paul, D. Prosnitz, E.T. Scharlemann, S.M. Yarema, D.B. Hopkins, A.M. Sessler, J.S. Wurtele, Phys. Rev. Lett., 57, 2172, 1986
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n610kz
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