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Title: Kinetic description of a plasma-loaded free-electron laser

Abstract

A kinetic theory is used to find the dispersion relation of a plasma-loaded free-electron laser that takes into account the velocity spread of both beam and plasma electrons. For the weak-coupling regime, the dispersion relation for a cold electron beam and plasma is obtained and is studied numerically. The kinetic theory predicts that, for the cold beam and plasma, plasma density increases the growth rate of the higher-frequency resonance and lowers it for the lower-frequency resonance up to a certain plasma density. By increasing the plasma density further, a critical density will be reached that diminishes the instability.

Authors:
;  [1];  [2]
  1. Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of)
  2. (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
20975008
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 5; Other Information: DOI: 10.1063/1.2734577; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM-PLASMA SYSTEMS; DISPERSION RELATIONS; ELECTRON BEAMS; ELECTRONS; FREE ELECTRON LASERS; PLASMA; PLASMA DENSITY; PLASMA INSTABILITY; RESONANCE

Citation Formats

Babaei, S., Maraghechi, B., and Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran and Institute for Studies in Theoretical Physics and Mathematics. Kinetic description of a plasma-loaded free-electron laser. United States: N. p., 2007. Web. doi:10.1063/1.2734577.
Babaei, S., Maraghechi, B., & Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran and Institute for Studies in Theoretical Physics and Mathematics. Kinetic description of a plasma-loaded free-electron laser. United States. doi:10.1063/1.2734577.
Babaei, S., Maraghechi, B., and Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran and Institute for Studies in Theoretical Physics and Mathematics. Tue . "Kinetic description of a plasma-loaded free-electron laser". United States. doi:10.1063/1.2734577.
@article{osti_20975008,
title = {Kinetic description of a plasma-loaded free-electron laser},
author = {Babaei, S. and Maraghechi, B. and Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran and Institute for Studies in Theoretical Physics and Mathematics},
abstractNote = {A kinetic theory is used to find the dispersion relation of a plasma-loaded free-electron laser that takes into account the velocity spread of both beam and plasma electrons. For the weak-coupling regime, the dispersion relation for a cold electron beam and plasma is obtained and is studied numerically. The kinetic theory predicts that, for the cold beam and plasma, plasma density increases the growth rate of the higher-frequency resonance and lowers it for the lower-frequency resonance up to a certain plasma density. By increasing the plasma density further, a critical density will be reached that diminishes the instability.},
doi = {10.1063/1.2734577},
journal = {Physics of Plasmas},
number = 5,
volume = 14,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
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