Parametric instabilities and localization of nonlinearly coupled electromagnetic modes in astrophysical dusty plasmas
Shukla, P. K. and Eliasson, B. and Kourakis, I. and Stenflo, Lennart (2006) Parametric instabilities and localization of nonlinearly coupled electromagnetic modes in astrophysical dusty plasmas. Journal of Plasma Physics, 72 (3). 397- 407. ISSN 0022-3778 (https://doi.org/10.1017/S0022377805004198)
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The nonlinear coupling between the Alfvén–Rao (AR) and dust–Alfvén (DA) modes in a uniform magnetized dusty plasma is considered. For this purpose, multi-fluid equations (composed of the continuity and momentum equations), the laws of Faraday and Ampère and the quasi-neutrality condition are adopted to derive a set of equations, which show how the fields of the modes are nonlinearly coupled. The equations are then used to investigate decay and modulational instabilities in magnetized dusty plasmas. Stationary nonlinear solutions of the coupled AR and DA equations are presented. The relevance of the investigation to nonlinear phenomena (instabilities and localized structures) in interstellar molecular clouds is also discussed.
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Item type: Article ID code: 57342 Dates: DateEvent30 June 2006PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 10 Aug 2016 10:50 Last modified: 08 Apr 2024 23:04 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/57342