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Saturation mechanism in a two-stream free-electron laser

Published online by Cambridge University Press:  17 December 2015

N. Mahdizadeh
N. Mahdizadeh*
Affiliation:
Department of Physics, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran
*
†Email address for correspondence: mahdizadeh@iaus.ac.ir
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Abstract

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 are considered. Nonlinear wave–particle interaction is described by a set of coupled differential equations in a 1-D approximation. Output power is presented as a function of the axial distance. It was found that through using a focusing mechanism, the two-stream FEL reached the saturation regime in a shorter axial distance in comparison with the case of no focusing mechanism.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 6 , December 2015 , 905810612
Copyright
© Cambridge University Press 2015 

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