Nonlinearly modulated dust lattice wave packets in two-dimensional hexagonal dust crystals

B. Farokhi, Yannis Kourakis, P.K. Shukla

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The amplitude modulation of dust lattice waves (DLWs) propagating in a two-dimensional hexagonal dust crystal is investigated in a continuum approximation, accounting for the effect of dust charge polarization (dressed interactions). A dusty plasma crystalline configuration with constant dust grain charge and mass is considered. The dispersion relation and the group velocity for DLWs are determined for wave propagation in both longitudinal and transverse directions. The reductive perturbation method is used to derive a (2+1)-dimensional nonlinear Schrodinger equation (NLSE). New expressions for the coefficients of the NLSE are derived and compared, for a Yukawa-type potential energy and for a
Original languageEnglish
Article number122304
JournalPhysics of Plasmas
Volume13
Issue number12
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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