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Ion holes in dusty pair plasmas

Published online by Cambridge University Press:  01 December 2008

HANS SCHAMEL
HANS SCHAMEL*
Affiliation:
Physikalisches Institut, Universität Bayreuth, D-95466 Bayreuth, Germany ([email protected])
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Abstract

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The existence of Bernstein–Greene–Kruskal (BGK)-like trapped ion modes in dusty plasmas is investigated by means of the pseudo-potential method applied to the Vlasov–Poisson system. The nonlinear dispersion relation, determining the phase velocity, and the pseudo-potential, representing the wave form and hence its spectral decomposition, are derived and analysed with respect to the effect of dust. Dust is found to diminish the region in ω, k-space, where periodic wave solutions of fast and slow mode character exist. Localized wave solutions in the form of solitary ion holes, owing their existence to the presence of dust, coexist as well, but turn into slow ion acoustic double layers in the limit of vanishing dust.

Type
Letter to the Editor
Information
Journal of Plasma Physics , Volume 74 , Issue 6 , December 2008 , pp. 725 - 731
Copyright
Copyright © Cambridge University Press 2008

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