Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma
A dispersive Landau-fluid model is used to study the decay and modulational instabilities of circularly-polarized Alfvén waves in a collisionless plasma, as well as their nonlinear developments. Comparisons are presented with the drift-kinetic approximation for the dispersionless regime and...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2004-01-01
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| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/11/609/2004/npg-11-609-2004.pdf |
| _version_ | 1819139243027464192 |
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| author | G. Bugnon T. Passot P. L. Sulem |
| author_facet | G. Bugnon T. Passot P. L. Sulem |
| author_sort | G. Bugnon |
| collection | DOAJ |
| description | A dispersive Landau-fluid model is used to study the decay and modulational instabilities of circularly-polarized Alfvén waves in a collisionless plasma, as well as their nonlinear developments. Comparisons are presented with the drift-kinetic approximation for the dispersionless regime and with hybrid simulations in more general conditions. The effect of the nature of the instability on particle heating is discussed, together with the formation of coherent structures or the development of an inverse cascade. |
| first_indexed | 2024-12-22T11:19:34Z |
| format | Article |
| id | doaj.art-3071a0b26a3242c0863e20cb8d1f11e6 |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-12-22T11:19:34Z |
| publishDate | 2004-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-3071a0b26a3242c0863e20cb8d1f11e62022-12-21T18:27:55ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462004-01-01115/6609618Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasmaG. BugnonT. PassotP. L. SulemA dispersive Landau-fluid model is used to study the decay and modulational instabilities of circularly-polarized Alfvén waves in a collisionless plasma, as well as their nonlinear developments. Comparisons are presented with the drift-kinetic approximation for the dispersionless regime and with hybrid simulations in more general conditions. The effect of the nature of the instability on particle heating is discussed, together with the formation of coherent structures or the development of an inverse cascade.http://www.nonlin-processes-geophys.net/11/609/2004/npg-11-609-2004.pdf |
| spellingShingle | G. Bugnon T. Passot P. L. Sulem Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma Nonlinear Processes in Geophysics |
| title | Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma |
| title_full | Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma |
| title_fullStr | Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma |
| title_full_unstemmed | Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma |
| title_short | Landau-fluid simulations of Alfvén-wave instabilities in a warm collisionless plasma |
| title_sort | landau fluid simulations of alfven wave instabilities in a warm collisionless plasma |
| url | http://www.nonlin-processes-geophys.net/11/609/2004/npg-11-609-2004.pdf |
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