Modulated wavepackets associated with longitudinal dust grain oscillations in a dusty plasma crystal

Yannis Kourakis, P K Shukla

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The nonlinear amplitude modulation of longitudinal dust lattice waves (LDLWs) propagating in a dusty plasma crystal is investigated in a continuum approximation. It is shown that long wavelength LDLWs are modulationally stable, while shorter wavelengths may be unstable. The possibility for the formation and propagation of different envelope localized excitations is discussed. It is shown that the total grain displacement bears a (weak) constant displacement (zeroth harmonic mode), due to the asymmetric form of the nonlinear interaction potential. The existence of asymmetric envelope localized modes is predicted. The types and characteristics of these coherent nonlinear structures are discussed. (C) 2004 American Institute of Physics.
Original languageEnglish
Pages (from-to)1384-1393
Number of pages10
JournalPhysics of Plasmas
Volume11
Issue number4
DOIs
Publication statusPublished - Apr 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Modulated wavepackets associated with longitudinal dust grain oscillations in a dusty plasma crystal'. Together they form a unique fingerprint.

Cite this