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| Titel |
Integrable, oblique travelling waves in quasi-charge-neutral two-fluid plasmas |
| VerfasserIn |
G. M. Webb, C. M. Ko, R. L. Mace, J. F. McKenzie, G. P. Zank |
| 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 ; 15, no. 1 ; Nr. 15, no. 1 (2008-02-25), S.179-208 |
| Datensatznummer |
250012564
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| Publikation (Nr.) |
 copernicus.org/npg-15-179-2008.pdf |
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| Zusammenfassung |
| A Hamiltonian description of oblique travelling waves in a two-fluid, charge-neutral,
electron-proton plasma reveals that the transverse momentum equations for the electron
and proton fluids are exactly integrable in cases where the total transverse
momentum flux integrals, Py(d) and Pz(d),
are both zero in the de Hoffman Teller (dHT)
frame. In this frame, the transverse electric fields are zero,
which simplifies the transverse momentum equations for the two fluids. The
integrable travelling waves for the case Py(d)=Pz(d)=0, are
investigated based on the Hamiltonian trajectories in phase space,
and also on the longitudinal structure equation for the common longitudinal fluid
velocity component ux of the electron and proton fluids. Numerical examples of a
variety of travelling waves in a cold plasma, including oscillitons, are used to illustrate the physics.
The transverse, electron and proton velocity components ujy and ujz (j=e, p)
of the waves exhibit complex, rosette type patterns over several periods
for ux. The role of separatrices in the phase space, the rotational integral
and the longitudinal structure equation on the different wave forms are discussed. |
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