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Ion-beam driven dust ion-acoustic solitary waves in dusty plasmas
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.
2010 (engelsk)Inngår i: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 17, nr 4, artikkel-id 044502Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The nonlinear propagation of small but finite amplitude dust ion-acoustic waves (DIAWs) in an ion-beam driven plasma consisting of Boltzmannian electrons, positive ions, and stationary negatively charged dust grains is studied by using the standard reductive perturbation technique. It is shown that there exist two critical values (γc1) and (γc2) of ion beam to ion phase velocity ratio (γ), above and below which the beam generated solitons are not possible. The effects of the parameters, namely, γ, the ratio of the ion beam to plasma ion density (μi), the dust to ion density ratio (μd), and the ion beam to plasma ion mass ratio (μ) on both the amplitude and width of the stationary DIAWs, are analyzed numerically, and applications of the results to laboratory ion beam as well as space plasmas (e.g., auroral plasmas) are explained.

sted, utgiver, år, opplag, sider
American Institute of Physics (AIP), 2010. Vol. 17, nr 4, artikkel-id 044502
Emneord [en]
astrophysical plasma, dusty plasmas, ion density, perturbation theory, plasma density, plasma simulation, plasma solitons, plasma-beam interactions
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-109633DOI: 10.1063/1.3381036ISI: 000277243000074OAI: oai:DiVA.org:umu-109633DiVA, id: diva2:858560
Tilgjengelig fra: 2015-10-02 Laget: 2015-10-02 Sist oppdatert: 2018-06-07bibliografisk kontrollert

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