Localized excitations of charged dust grains in dusty plasma lattices
| Data(s) |
31/10/2005
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|---|---|
| Identificador | |
| Idioma(s) |
eng |
| Direitos |
info:eu-repo/semantics/restrictedAccess |
| Fonte |
Kourakis , I , Shukla , P K & Basios , V 2005 , Localized excitations of charged dust grains in dusty plasma lattices . in New Vistas in Dusty Plasmas : Fourth International Conference on the Physics of Dusty Plasmas, Orleans, France, 13-17 June 2005 . vol. 799 , AIP Conference Proceedings , vol. 799 , Springer , pp. 534-537 , 4th International Conference on Physics of Dusty Plasmas , Orleans , France , 1-1 June . |
| Tipo |
contributionToPeriodical |
| Resumo |
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<br/>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. |
| Publicador |
Springer |
| Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all) |
