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Title: Formation of Electric Field Spikes in Electron-Beam{endash}Plasma Interaction

Abstract

High-frequency waves, which are driven by a strong electron beam and propagate along a density gradient, can form spatially concentrated {open_quote}{open_quote}HF spikes{close_quote}{close_quote} which extend typically one wavelength (1 cm) in the direction along the beam. Experiments and computer simulations show that the spike is a standing wave with nodes at boundaries to regions with propagating waves. The spikes only form in a plasma density gradient, and attempts to produce them in homogeneous plasma have failed. They form without trapping of the waves in density cavities and remain stable after the formation, i.e., there is no tendency towards collapse of the structure. {copyright} {ital 1996 The American Physical Society.}

Authors:
; ; ;  [1]
  1. Division of Plasma Physics, Alfven Laboratory, Royal Institute of Technology, Stockholm (Sweden)
Publication Date:
OSTI Identifier:
404078
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 77; Journal Issue: 25; Other Information: PBD: Dec 1996
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; ELECTRON BEAMS; ELECTRIC FIELDS; BEAM-PLASMA SYSTEMS; HIGH-FREQUENCY DISCHARGES; THERMAL SPIKES; WAVE PROPAGATION; DENSITY; WAVELENGTHS; STANDING WAVES; TRAPPING; SIMULATION

Citation Formats

Gunell, H, Verboncoeur, J P, Brenning, N, Torven, S, and Electronics Research Laboratory, University of California, Berkeley, California. Formation of Electric Field Spikes in Electron-Beam{endash}Plasma Interaction. United States: N. p., 1996. Web. doi:10.1103/PhysRevLett.77.5059.
Gunell, H, Verboncoeur, J P, Brenning, N, Torven, S, & Electronics Research Laboratory, University of California, Berkeley, California. Formation of Electric Field Spikes in Electron-Beam{endash}Plasma Interaction. United States. doi:10.1103/PhysRevLett.77.5059.
Gunell, H, Verboncoeur, J P, Brenning, N, Torven, S, and Electronics Research Laboratory, University of California, Berkeley, California. Sun . "Formation of Electric Field Spikes in Electron-Beam{endash}Plasma Interaction". United States. doi:10.1103/PhysRevLett.77.5059.
@article{osti_404078,
title = {Formation of Electric Field Spikes in Electron-Beam{endash}Plasma Interaction},
author = {Gunell, H and Verboncoeur, J P and Brenning, N and Torven, S and Electronics Research Laboratory, University of California, Berkeley, California},
abstractNote = {High-frequency waves, which are driven by a strong electron beam and propagate along a density gradient, can form spatially concentrated {open_quote}{open_quote}HF spikes{close_quote}{close_quote} which extend typically one wavelength (1 cm) in the direction along the beam. Experiments and computer simulations show that the spike is a standing wave with nodes at boundaries to regions with propagating waves. The spikes only form in a plasma density gradient, and attempts to produce them in homogeneous plasma have failed. They form without trapping of the waves in density cavities and remain stable after the formation, i.e., there is no tendency towards collapse of the structure. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevLett.77.5059},
journal = {Physical Review Letters},
number = 25,
volume = 77,
place = {United States},
year = {1996},
month = {12}
}