Linear and nonlinear dynamics of a dust bicrystal consisting of positive and negative dust particles

Yannis Kourakis, P K Shukla, G.E. Morfill

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A dusty plasma crystalline configuration consisting of charged dust grains of alternating charge sign (.../+/-/+/-/+/...) and mass is considered. Both charge and mass of each dust species are taken to be constant. Considering the equations of longitudinal motion, a dispersion relation for linear longitudinal vibrations is derived from first principles and then analyzed. Two harmonic modes are obtained, namely, an acoustic mode and an inverse-dispersive optic-like one. The nonlinear aspects of acoustic longitudinal dust grain motion are addressed via a generalized Boussinesq (and, alternatively, a generalized Korteweg-de Vries) description. (C) 2005 American Institute of Physics.
Original languageEnglish
Article number112104
Pages (from-to)1-6
Number of pages6
JournalPhysics of Plasmas
Volume12
Issue number11
DOIs
Publication statusPublished - 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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