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Solitary kinetic Alfvén waves in dusty plasmas
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| Zeitschriftentitel: | Physics of Plasmas |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Physics of Plasmas, 15, 2008, 8 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Li, Yang-fang Wu, D. J. Morfill, G. E. Li, Yang-fang Wu, D. J. Morfill, G. E. |
|---|---|
| author |
Li, Yang-fang Wu, D. J. Morfill, G. E. |
| spellingShingle |
Li, Yang-fang Wu, D. J. Morfill, G. E. Physics of Plasmas Solitary kinetic Alfvén waves in dusty plasmas Condensed Matter Physics |
| author_sort |
li, yang-fang |
| spelling |
Li, Yang-fang Wu, D. J. Morfill, G. E. 1070-664X 1089-7674 AIP Publishing Condensed Matter Physics http://dx.doi.org/10.1063/1.2975364 <jats:p>Solitary kinetic Alfvén waves in dusty plasmas are studied by considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvénic and the soliton velocity is obviously smaller than the Alfvén speed. The other branch is super-Alfvénic and the soliton velocity is very close to or greater than the Alfvén speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvénic branch, the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However, for the super-Alfvénic branch, the compressive soliton is bell-shaped and narrower, and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high, the width of the rarefactive soliton, in the super-Alfvénic branch, will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high.</jats:p> Solitary kinetic Alfvén waves in dusty plasmas Physics of Plasmas |
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1070-664X 1089-7674 |
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Physics of Plasmas |
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| title |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_unstemmed |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_full |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_fullStr |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_full_unstemmed |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_short |
Solitary kinetic Alfvén waves in dusty plasmas |
| title_sort |
solitary kinetic alfvén waves in dusty plasmas |
| topic |
Condensed Matter Physics |
| url |
http://dx.doi.org/10.1063/1.2975364 |
| publishDate |
2008 |
| physical |
|
| description |
<jats:p>Solitary kinetic Alfvén waves in dusty plasmas are studied by considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvénic and the soliton velocity is obviously smaller than the Alfvén speed. The other branch is super-Alfvénic and the soliton velocity is very close to or greater than the Alfvén speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvénic branch, the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However, for the super-Alfvénic branch, the compressive soliton is bell-shaped and narrower, and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high, the width of the rarefactive soliton, in the super-Alfvénic branch, will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high.</jats:p> |
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| author | Li, Yang-fang, Wu, D. J., Morfill, G. E. |
| author_facet | Li, Yang-fang, Wu, D. J., Morfill, G. E., Li, Yang-fang, Wu, D. J., Morfill, G. E. |
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| description | <jats:p>Solitary kinetic Alfvén waves in dusty plasmas are studied by considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvénic and the soliton velocity is obviously smaller than the Alfvén speed. The other branch is super-Alfvénic and the soliton velocity is very close to or greater than the Alfvén speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvénic branch, the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However, for the super-Alfvénic branch, the compressive soliton is bell-shaped and narrower, and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high, the width of the rarefactive soliton, in the super-Alfvénic branch, will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high.</jats:p> |
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| spelling | Li, Yang-fang Wu, D. J. Morfill, G. E. 1070-664X 1089-7674 AIP Publishing Condensed Matter Physics http://dx.doi.org/10.1063/1.2975364 <jats:p>Solitary kinetic Alfvén waves in dusty plasmas are studied by considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvénic and the soliton velocity is obviously smaller than the Alfvén speed. The other branch is super-Alfvénic and the soliton velocity is very close to or greater than the Alfvén speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvénic branch, the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However, for the super-Alfvénic branch, the compressive soliton is bell-shaped and narrower, and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high, the width of the rarefactive soliton, in the super-Alfvénic branch, will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high.</jats:p> Solitary kinetic Alfvén waves in dusty plasmas Physics of Plasmas |
| spellingShingle | Li, Yang-fang, Wu, D. J., Morfill, G. E., Physics of Plasmas, Solitary kinetic Alfvén waves in dusty plasmas, Condensed Matter Physics |
| title | Solitary kinetic Alfvén waves in dusty plasmas |
| title_full | Solitary kinetic Alfvén waves in dusty plasmas |
| title_fullStr | Solitary kinetic Alfvén waves in dusty plasmas |
| title_full_unstemmed | Solitary kinetic Alfvén waves in dusty plasmas |
| title_short | Solitary kinetic Alfvén waves in dusty plasmas |
| title_sort | solitary kinetic alfvén waves in dusty plasmas |
| title_unstemmed | Solitary kinetic Alfvén waves in dusty plasmas |
| topic | Condensed Matter Physics |
| url | http://dx.doi.org/10.1063/1.2975364 |