Chaotic oscillations enhanced by magnetosonic waves in plasma-filled traveling-wave tubes

Yu P. Bliokh; M. G. Liubarskii; V. O. Podobinskii; Ya B. Fainberg; G. S. Nusinovich; S. Kobayashi; Y. Carmel; V. L. Granatstein

doi:10.1063/1.873128

Chaotic oscillations enhanced by magnetosonic waves in plasma-filled traveling-wave tubes

Yu P. Bliokh, M. G. Liubarskii, V. O. Podobinskii, Ya B. Fainberg, G. S. Nusinovich, S. Kobayashi, Y. Carmel, V. L. Granatstein

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15 Scopus citations

Abstract

A theory of plasma-filled traveling-wave tubes (TWTs) is developed in which the effect of magnetosonic waves excited in plasma by the operating wave is taken into account. These waves are excited by the ponderomotive force caused by the radial inhomogeneity of the axial component of the electric field of the operating wave. In the simplest case considered in the paper, this effect leads to an additional reactive nonlinearity in the wave envelope equation. This leads to a shrinkage of the region of stable oscillations in TWTs with the feedback causing the self-excitation; at the same time, the region of stochastic oscillations becomes larger. The radiation spectrum of stochastic oscillations in plasma-filled TWTs in which magnetosonic waves are excited is much wider and more continuous than the spectrum of stochastic oscillations in vacuum TWTs with the same feedback.

Original language	English
Pages (from-to)	4061-4069
Number of pages	9
Journal	Physics of Plasmas
Volume	5
Issue number	11
DOIs	https://doi.org/10.1063/1.873128
State	Published - 1 Jan 1998
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1063/1.873128

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title = "Chaotic oscillations enhanced by magnetosonic waves in plasma-filled traveling-wave tubes",

abstract = "A theory of plasma-filled traveling-wave tubes (TWTs) is developed in which the effect of magnetosonic waves excited in plasma by the operating wave is taken into account. These waves are excited by the ponderomotive force caused by the radial inhomogeneity of the axial component of the electric field of the operating wave. In the simplest case considered in the paper, this effect leads to an additional reactive nonlinearity in the wave envelope equation. This leads to a shrinkage of the region of stable oscillations in TWTs with the feedback causing the self-excitation; at the same time, the region of stochastic oscillations becomes larger. The radiation spectrum of stochastic oscillations in plasma-filled TWTs in which magnetosonic waves are excited is much wider and more continuous than the spectrum of stochastic oscillations in vacuum TWTs with the same feedback.",

author = "Bliokh, {Yu P.} and Liubarskii, {M. G.} and Podobinskii, {V. O.} and Fainberg, {Ya B.} and Nusinovich, {G. S.} and S. Kobayashi and Y. Carmel and Granatstein, {V. L.}",

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T1 - Chaotic oscillations enhanced by magnetosonic waves in plasma-filled traveling-wave tubes

AU - Bliokh, Yu P.

AU - Liubarskii, M. G.

AU - Podobinskii, V. O.

AU - Fainberg, Ya B.

AU - Nusinovich, G. S.

AU - Kobayashi, S.

AU - Carmel, Y.

AU - Granatstein, V. L.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - A theory of plasma-filled traveling-wave tubes (TWTs) is developed in which the effect of magnetosonic waves excited in plasma by the operating wave is taken into account. These waves are excited by the ponderomotive force caused by the radial inhomogeneity of the axial component of the electric field of the operating wave. In the simplest case considered in the paper, this effect leads to an additional reactive nonlinearity in the wave envelope equation. This leads to a shrinkage of the region of stable oscillations in TWTs with the feedback causing the self-excitation; at the same time, the region of stochastic oscillations becomes larger. The radiation spectrum of stochastic oscillations in plasma-filled TWTs in which magnetosonic waves are excited is much wider and more continuous than the spectrum of stochastic oscillations in vacuum TWTs with the same feedback.

AB - A theory of plasma-filled traveling-wave tubes (TWTs) is developed in which the effect of magnetosonic waves excited in plasma by the operating wave is taken into account. These waves are excited by the ponderomotive force caused by the radial inhomogeneity of the axial component of the electric field of the operating wave. In the simplest case considered in the paper, this effect leads to an additional reactive nonlinearity in the wave envelope equation. This leads to a shrinkage of the region of stable oscillations in TWTs with the feedback causing the self-excitation; at the same time, the region of stochastic oscillations becomes larger. The radiation spectrum of stochastic oscillations in plasma-filled TWTs in which magnetosonic waves are excited is much wider and more continuous than the spectrum of stochastic oscillations in vacuum TWTs with the same feedback.

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Chaotic oscillations enhanced by magnetosonic waves in plasma-filled traveling-wave tubes

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