Nonlinear modulation of transverse dust lattice waves in complex plasma crystals

Details Nonlinear modulation of transverse dust lattice waves in complex plasma crystals Nonlinear modulation of transverse dust lattice waves in complex plasma crystals

2004-01-31

arxiv.org/abs/cond-mat/0402007v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, no figures; submitted to Physics of Plasmas

Scientific paper

10.1063/1.1703529

The occurrence of the modulational instability (MI) in transverse dust lattice waves propagating in a one-dimensional dusty plasma crystal is investigated. The amplitude modulation mechanism, which is related to the intrinsic nonlinearity of the sheath electric field, is shown to destabilize the carrier wave under certain conditions, possibly leading to the formation of localized envelope excitations. Explicit expressions for the instability growth rate and threshold are presented and discussed.

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