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1.	Shukla, Padma, et al. (author) Excitation of zonal flows by electron convective cells in a nonuniform dusty magnetoplasma 2001 In: Physics Letters A. - 0375-9601 .- 1873-2429. ; 283:5-6, s. 371-375 Journal article (peer-reviewed)abstract It is shown that the ponderomotive force of electron convective cells can generate zonal flows (or dust convective cells) in a nonuniform magnetoplasma. For this purpose, two fluid equations are used to derive a pair of coupled equations which govern the nonlinear coupling between electron and dust convective cells. A dispersion relation for the parametric interactions is deduced from the mode coupling equations. Explicit expressions for the growth rates of electron convective cell driven zonal flows are then obtained. The relevance of our investigation to laboratory and space plasmas is pointed out.
2.	Wiklund, Krister, et al. (author) Mode coupling and stability of modified convective cells in a nonuniform dusty magnetoplasma 2001 In: Physics Letters A. - 0375-9601 .- 1873-2429. ; 279:3-4, s. 239-242 Journal article (peer-reviewed)abstract Within the framework of a Hamiltonian approach, we study mode coupling and stability of nonlinearly interacting modified convective cells in a nonuniform dusty magnetoplasma. Expressions for the coupling coefficients and a stability criterion for the stationary solutions are presented. This is a necessary prerequisite for understanding the nonlinear dynamics of convective cells in a dusty magnetoplasma with a strongly nonuniform background.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Wiklund, Krister (2)Undo refine; Shukla, Padma (2); Stenflo, Lennart (2)

University: Umeå University (2)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2)

Year: 2001 (2)

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