A note on the Weibel instability and thermal fluctuations
The thermal fluctuation level of the Weibel instability is recalculated. It is shown that the divergence of the fluctuations at long wavelengths, i.e. the Weibel infrared catastrophe, never occurs. At large wavelengths the thermal fluctuation level is terminated by the presence of even the smalle...
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Copernicus Publications
2012-02-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.pdf |
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doaj-1c189f40615447bd97630c82882537182020-11-25T00:40:39ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762012-02-013042743110.5194/angeo-30-427-2012A note on the Weibel instability and thermal fluctuationsR. A. Treumann0R. A. Treumann1W. Baumjohann2Department of Geophysics and Environmental Sciences, Munich University, Munich, GermanyDepartment of Physics and Astronomy, Dartmouth College, Hanover NH 03755, USASpace Research Institute, Austrian Academy of Sciences, Graz, AustriaThe thermal fluctuation level of the Weibel instability is recalculated. It is shown that the divergence of the fluctuations at long wavelengths, i.e. the Weibel infrared catastrophe, never occurs. At large wavelengths the thermal fluctuation level is terminated by the presence of even the smallest available stable thermal anisotropy. Weibel fields penetrate only one skin depth into the plasma. When excited inside, they cause layers of antiparallel fields of skin depth width and vortices which may be subject to reconnection.https://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
R. A. Treumann R. A. Treumann W. Baumjohann |
| spellingShingle |
R. A. Treumann R. A. Treumann W. Baumjohann A note on the Weibel instability and thermal fluctuations Annales Geophysicae |
| author_facet |
R. A. Treumann R. A. Treumann W. Baumjohann |
| author_sort |
R. A. Treumann |
| title |
A note on the Weibel instability and thermal fluctuations |
| title_short |
A note on the Weibel instability and thermal fluctuations |
| title_full |
A note on the Weibel instability and thermal fluctuations |
| title_fullStr |
A note on the Weibel instability and thermal fluctuations |
| title_full_unstemmed |
A note on the Weibel instability and thermal fluctuations |
| title_sort |
note on the weibel instability and thermal fluctuations |
| publisher |
Copernicus Publications |
| series |
Annales Geophysicae |
| issn |
0992-7689 1432-0576 |
| publishDate |
2012-02-01 |
| description |
The thermal fluctuation level of the Weibel instability is recalculated. It
is shown that the divergence of the fluctuations at long wavelengths, i.e.
the Weibel infrared catastrophe, never occurs. At large wavelengths the
thermal fluctuation level is terminated by the presence of even the smallest
available stable thermal anisotropy. Weibel fields penetrate only one skin
depth into the plasma. When excited inside, they cause layers of antiparallel
fields of skin depth width and vortices which may be subject to reconnection. |
| url |
https://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.pdf |
| work_keys_str_mv |
AT ratreumann anoteontheweibelinstabilityandthermalfluctuations AT ratreumann anoteontheweibelinstabilityandthermalfluctuations AT wbaumjohann anoteontheweibelinstabilityandthermalfluctuations AT ratreumann noteontheweibelinstabilityandthermalfluctuations AT ratreumann noteontheweibelinstabilityandthermalfluctuations AT wbaumjohann noteontheweibelinstabilityandthermalfluctuations |
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1725288917016510464 |