Linear analysis of a finite length plasma-filled backward wave oscillator

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Title: Linear analysis of a finite length plasma-filled backward wave oscillator
Author: Ali, M.; Orgura, K.; Minami, K.; Destler, William; Granatstein, V.
Abstract: Absolute instability in a plasma-filled backward wave oscillator with sinusoidally corrugated slow wave structure driven by an intense relativistic electron beam has been analyzed numerically. The maximum spatial growth rate of the plasma-filled waveguide is found to be larger than that of an optimally designed vacuum structure. The excitation of a finite length structure is investigated. Although the spatial growth rates obtained in the linear theory increase with plasma density in the finite length plasma-filled structure for the fundamental TM01 mode of oscillation, negative global spatial growth rates prevent the coherent oscillation for intermediate ranges of plasma density, beam current, and even for structure length.
Record URI: http://hdl.handle.net/1850/10165
Date: 1992-04

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