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| Titel |
Solitons and oscillitons in multi-ion space plasmas |
| VerfasserIn |
K. Sauer, E. Dubinin, J. F. McKenzie |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 10, no. 1/2 ; Nr. 10, no. 1/2, S.121-130 |
| Datensatznummer |
250007827
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| Publikation (Nr.) |
 copernicus.org/npg-10-121-2003.pdf |
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| Zusammenfassung |
| It is well known
that additional low-frequency waves arise when a second ion population is
added to a plasma normally consisting of protons and electrons. Here, we
investigate stationary structures streaming with a sub-fast speed in such
a bi-ion plasma. It is shown that in addition to the usual "solitons",
which have already been described for a single-ion plasma, a new type of
stationary structure occurs due to the second ion population. This
structure is associated with complex solutions of the linear dispersion
relation in certain regions of the wave number-obliquity space. This
implies that the corresponding soliton structure exhibits an oscillating
spatial structure superposed on the usual spatial growth or decay. The
full-blown solution of the nonlinear equations confirms that this is
indeed the case. The related structure is called an "oscilliton".
Examples of both types of stationary nonlinear waves (solitons and
oscillitons), which may exist in a bi-ion plasma are given. |
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