dorsal/arxiv
View SchemaSubsonic ion-acoustic solitons
| Authors | H. Abbasi, H. Hakimi Pajouh, H. A. Shah |
|---|---|
| Categories | |
| ArXiv ID | physics/0505011 |
| URL | https://arxiv.org/abs/physics/0505011 |
Abstract
In this paper, the nonlinear theory of plasma waves is extended to the plasmas that their equilibrium state are specified by the non-Maxwellian (here kappa) distribution. We believe that the extension is very important since most of the space and some of laboratory plasmas are not in the Maxwellian equilibrium. Although the linear theory of this issue has been known for the decades but, to our knowledge, this is the first attempt in opening the gate to the nonlinear world of plasma waves with the non-Maxwellian equilibrium. As an example the ion-acoustic solitons are studied in this framework taking into account the electron trapping in the trough of longitudinal field. It is shown, as the most important result regarding to the non-Maxwillian equilibrium, that there is the possibility for the ion-acoustic solitons to move subsonically. The solitons velocity and their width are monotonically increasing functions of spectral index ($\kappa$) and approach to the their Maxwellian values as $\kappa \to \infty$.
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"abstract": "In this paper, the nonlinear theory of plasma waves is extended to the\nplasmas that their equilibrium state are specified by the non-Maxwellian (here\nkappa) distribution. We believe that the extension is very important since most\nof the space and some of laboratory plasmas are not in the Maxwellian\nequilibrium. Although the linear theory of this issue has been known for the\ndecades but, to our knowledge, this is the first attempt in opening the gate to\nthe nonlinear world of plasma waves with the non-Maxwellian equilibrium. As an\nexample the ion-acoustic solitons are studied in this framework taking into\naccount the electron trapping in the trough of longitudinal field. It is shown,\nas the most important result regarding to the non-Maxwillian equilibrium, that\nthere is the possibility for the ion-acoustic solitons to move subsonically.\nThe solitons velocity and their width are monotonically increasing functions of\nspectral index ($\\kappa$) and approach to the their Maxwellian values as\n$\\kappa \\to \\infty$.",
"arxiv_id": "physics/0505011",
"authors": [
"H. Abbasi",
"H. Hakimi Pajouh",
"H. A. Shah"
],
"categories": [
"physics.plasm-ph"
],
"title": "Subsonic ion-acoustic solitons",
"url": "https://arxiv.org/abs/physics/0505011"
},
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