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Ion Dynamics in Electron Beam–plasma Interaction: Particle-in-cell Simulations : Volume 32, Issue 8 (22/08/2014)

By Baumgärtel, K.

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Book Id: WPLBN0004002377
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Ion Dynamics in Electron Beam–plasma Interaction: Particle-in-cell Simulations : Volume 32, Issue 8 (22/08/2014)  
Author: Baumgärtel, K.
Volume: Vol. 32, Issue 8
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Baumgärtel, K. (2014). Ion Dynamics in Electron Beam–plasma Interaction: Particle-in-cell Simulations : Volume 32, Issue 8 (22/08/2014). Retrieved from http://hawaiilibrary.net/


Description
Description: Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany. Electron beam–plasma interaction including ions is studied by particle-in-cell (PIC) simulations using a one-dimensional, electrostatic code. Evidence for Langmuir wave decay is given for sufficiently energetic beams, as in previous Vlasov–Maxwell simulations. The mechanism for the generation of localized finite-amplitude ion density fluctuations is analyzed. Amplitude modulation due to interference between the beam-generated Langmuir waves causes random wave localization including strong transient spikes in field intensity which create bursty ion density structures via ponderomotive forces. More dense beams may quench the decay instability and generate low-frequency variations dominated by the wave number of the fastest growing Langmuir mode.

Summary
Ion dynamics in electron beam–plasma interaction: particle-in-cell simulations

Excerpt
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