Parametric instability on an annular beam induced by a periodic beam-channel boundary

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Title

Parametric instability on an annular beam induced by a periodic beam-channel boundary (EN)

Creator

Vomvoridis, JL (EN)

Lazaros, A (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:13:59Z

1998 (EN)

Year

1998 (EN)

Description

In the framework of the general Nishikawa formalism for parametric instabilities the coupling is examined of the plasma oscillations to the density modulations of an annular electron beam, modulated by an axially periodic beam-channel boundary commonly used in microwave sources. It is found that the instability is present when the distance between the beam and the channel boundary is larger than the periodic length of the boundary. It is also found that the growth rate of the instability is independent of the beam current and depends only on the beam velocity and the periodic length of the beam-channel boundary. (C) 1998 American Institute of Physics. [S1070-664X(98)00211-0]. (EN)

Scientific field

Physics, Fluids & Plasmas (EN)

Natural Sciences ▶ Physical sciences
Physics, Fluids and Plasmas (EN)

Subject

WAVE (EN)

Journal

Physics of Plasmas (EN)

Language

English

Publisher

AMER INST PHYSICS (EN)

Provider