Modulated wave packets and envelope solitary structures in complex plasmas

Yannis Kourakis, P K Shukla

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A theoretical study is presented of the nonlinear amplitude modulation of waves propagating in unmagnetized plasmas contaminated by charged dust particles. Distinct well-known dusty plasma modes are explicitly considered, namely, the dust-acoustic wave, the dust-ion acoustic wave, and transverse dust-lattice waves. Using a multiple-scale technique, a nonlinear Schrodinger-type equation is derived, describing the evolution of the wave amplitude. A stability analysis reveals the possibility for modulational instability to occur, possibly leading to the formation of different types of envelope-localized excitations (solitary waves), under conditions which depend on the wave dispersion laws and intrinsic dusty plasma parameters.
Original languageEnglish
Pages (from-to)573-581
Number of pages9
JournalIEEE Transactions on Plasma Science
Volume32
Issue number2 II
DOIs
Publication statusPublished - Apr 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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