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Resonant Weibel instability in counterstreaming plasmas with temperature anisotropies
Leuven University, Belgium.
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
2010 (English)In: Journal of Plasma Physics, ISSN 0022-3778, Vol. 76, no 1, 49-56 p.Article in journal (Refereed) Published
Abstract [en]

The Weibel instability, driven by a plasma temperature anisotropy, is non-resonant with plasma particles: it is purely growing in time, and does not oscillate. The effect of a counterstreaming plasma is examined. In a counterstreaming plasma with an excess of transverse temperature, the Weibel instability arises along the streaming direction. Here it is proved that for large wave-numbers the instability becomes resonant with a finite real (oscillation) frequency, ωr ≠ 0. When the plasma flows faster, with a bulk velocity larger than the parallel thermal velocity, the instability becomes dominantly resonant. This new feature of the Weibel instability can be relevant for astrophysical sources of non-thermal emissions and the stability of counterflowing plasma experiments.

Place, publisher, year, edition, pages
2010. Vol. 76, no 1, 49-56 p.
Keyword [en]
magnetic field generation, instability
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:liu:diva-52692DOI: 10.1017/S0022377809008101ISI: 000274550800007OAI: diva2:284720
Available from: 2010-01-08 Created: 2010-01-08 Last updated: 2010-02-26

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Dieckmann, Mark Eric
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Visual Information Technology and Applications (VITA)The Institute of Technology
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