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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1691

Title: Plasma effects in a free electron laser
Authors: Tripathi, Vipin K
Liu, Chuan Sheng
Keywords: free electron laser (FEL)
electron-cyclotron
two-stream instability (TSI)
electron density
Issue Date: 1990
Citation: Plasma Science, IEEE Transactions on, 18(3), 466 - 471p.
Abstract: The introduction of a plasma and a strong guide magnetic field in a free electron laser (FEL) slows down the phase velocity of radiation, significantly reducing the requirements on beam energy for generating frequencies below the electron-cyclotron frequency (ω1≲ωc). Around plasma resonance (ω1~ωp), the FEL mode couples to two-stream instability (TSI), attaining a large growth rate, comparable to that of the wiggler-free TSI. At plasma densities comparable to beam density, the beam-induced local depression in the electron density of the plasma acts as a waveguide for guiding any high-frequency radiation when the beam current is ≳17 kA
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1691
Appears in Collections:Physics

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