Localized excitations of charged dust grains in dusty plasma lattices

Ioannis Kourakis, Padma Kant Shukla, Vassileios Basios

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The nonlinear aspects of charged dust grain motion in a one-dimensional dusty plasma (DP) monolayer are discussed. Both horizontal (longitudinal, acoustic mode) and vertical (transverse, optic mode) displacements are considered, and various types of localized excitations are reviewed, in a continuum approximation. Dust crystals are shown to support nonlinear kink-shaped supersonic longitudinal solitary excitations, as well as modulated envelope (either longitudinal or transverse) localized modes. The possibility for Discrete Breather (DB-) type excitations (Intrinsic Localized Modes, ILMs) to occur is investigated, from first principles. These highly localized excitations owe their existence to lattice discreteness, in combination with the interaction and/or substrate (sheath) potential nonlinearity. This possibility may open new directions in DP- related research. The relation to previous results on atomic chains as well as to experimental results on strongly-coupled dust layers in gas discharge plasmas is discussed.

Original languageBritish English
Title of host publicationNEW VISTAS IN DUSTY PLASMAS
Subtitle of host publicationFourth International Conference on the Physics of Dusty Plasmas
Pages534-537
Number of pages4
DOIs
StatePublished - 31 Oct 2005
Event4th International Conference on the Physics of Dusty Plasmas - Orleans, France
Duration: 13 Jun 200517 Jun 2005

Publication series

NameAIP Conference Proceedings
Volume799
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Conference on the Physics of Dusty Plasmas
Country/TerritoryFrance
CityOrleans
Period13/06/0517/06/05

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