Zakharov-Kuznetsov equation for ion acoustic waves with superthermal electrons in cylindrical geometry
The nonlinear wave structures of ion acoustic waves (IAWs) in a magnetized plasma with the combined effect of bounded cylindrical geometry and superthermal electrons and warm ions are studied. Using the standard reductive perturbation technique, the nonlinear cylindrical Zakharov-Kuznetsov (ZK) equa...
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Published in | Europhysics letters Vol. 100; no. 1; p. P1 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
01.10.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The nonlinear wave structures of ion acoustic waves (IAWs) in a magnetized plasma with the combined effect of bounded cylindrical geometry and superthermal electrons and warm ions are studied. Using the standard reductive perturbation technique, the nonlinear cylindrical Zakharov-Kuznetsov (ZK) equation is derived for the propagation of ion acoustic solitary waves (IASWs). The influence of superthermal electrons and the effects caused by the cylindrical geometry on IAWs are investigated. It is shown that, in cylindrical geometry a new type of solitonlike structures appears as time goes by. It is also observed that a decrease in the superthermality of electrons (i.e., increasing ...) increases the amplitude of the solitary electrostatic potential structures. The numerical results are also presented to understand the formation of IASWs in relation with the plasma parameters in nonplanar geometry. The present investigation is of relevance in the study of propagation of IAWs in space and laboratory plasmas. (ProQuest: ... denotes formulae/symbols omitted.) |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
ISSN: | 0295-5075 1286-4854 |