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Three-dimensional nonlinear Schrodinger equation in electron-positron-ion magnetoplasmas
Umeå University, Faculty of Science and Technology, Department of Physics.
2011 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 18, no 3, 032302Article in journal (Refereed) Published
Abstract [en]

Three-dimensional ion-acoustic envelope soliton excitations in electron-positron-ion magnetoplasmas are interpreted. This is accomplished through the derivation of three-dimensional nonlinear Schrodinger equation, where the nonlinearity is balancing with the dispersive terms. The latter contains both an external magnetic field besides the usual plasma parameter effects. Based on the balance between the nonlinearity and the dispersion terms, the regions for possible envelope solitons are investigated indicating that new regimes for modulational instability of envelope ion-acoustic waves could be obtained, which cannot exist in the unmagnetized case. This will allow us to establish additional new regimes, different from the usual unmagnetized plasma, for envelope ion-acoustic waves to propagate in multicomponent plasma that may be observed in space or astrophysics.

Place, publisher, year, edition, pages
2011. Vol. 18, no 3, 032302
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:umu:diva-104480DOI: 10.1063/1.3564963ISI: 000289151900024OAI: oai:DiVA.org:umu-104480DiVA: diva2:821733
Available from: 2015-06-15 Created: 2015-06-11 Last updated: 2017-12-04Bibliographically approved

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Shukla, Padma K.

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