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

Autor:	M. G. Liubarskii, Yu. P. Bliokh, Gregory S. Nusinovich, Ya. B. Fainberg, S. Kobayashi, Yuval Carmel, V. O. Podobinskii, V.L. Granatstein
Rok vydání:	1998
Předmět:	Physics Electromagnetic spectrum Plasma Ponderomotive force Condensed Matter Physics Plasma oscillation Traveling-wave tube law.invention Classical mechanics Physics::Plasma Physics law Quantum electrodynamics Excited state Electric field Envelope (waves)
Zdroj:	Physics of Plasmas. 5:4061-4069
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.873128
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca7963460d30b4bc61b6e832443440f6 https://doi.org/10.1063/1.873128 Zobrazit plný text záznamu