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| Titel |
Electron beam relaxation in inhomogeneous plasmas |
| VerfasserIn |
A. Voshchepynets, V. Krasnoselskikh |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 8 ; Nr. 31, no. 8 (2013-08-08), S.1379-1385 |
| Datensatznummer |
250086091
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| Publikation (Nr.) |
 copernicus.org/angeo-31-1379-2013.pdf |
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| Zusammenfassung |
| In this work, we studied the effects of background plasma
density fluctuations on the relaxation of electron beams. For the
study, we assumed that the level of fluctuations was so high that
the majority of Langmuir waves generated as a result of beam-plasma
instability were trapped inside density depletions. The system can
be considered as a good model for describing beam-plasma
interactions in the solar wind. Here we show that due to the
effect of wave trapping, beam relaxation slows significantly. As a
result, the length of relaxation for the electron beam in such an
inhomogeneous plasma is much longer than in a homogeneous plasma.
Additionally, for sufficiently narrow beams, the process of
relaxation is accompanied by transformation of significant part of
the beam kinetic energy to energy of accelerated particles. They
form the tail of the distribution and can carry up to 50% of the
initial beam energy flux. |
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