Electrostatic waves in superthermal dusty plasmas: Review of recent advancement

I. Kourakis, S. Sultana

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Real plasmas are often caracterized by the presence of excess energetic particle populations, resulting in a long-tailed non-Maxwellian distribution. In Space plasma physics, this phenomenon is usually modelled via a kappa-type distribution. This presentation is dedicated to an investigation, from first principles, of the effect of superthermality on the characteristics of dusty plasma modes. We employ a kappa distribution function to model the superthermality of the background components (electrons and/or ions). Background superthermality is shown to modify the charge screening mechanism in dusty plasmas, thus affecting the linear dispersion laws of both low-and higher frequency DP modes substantially. Various experimentally observed effects may thus be interpreted as manifestations of superthermality. Focusing on the features of nonlinear excitations (solitons) as they occur in different dusty plasma modes, we investigate the role of superthermality in their propagation dynamics (existence laws, stability profile) and characteristics (geometry).

Original languageBritish English
Title of host publicationDusty/Complex Plasmas
Subtitle of host publicationBasic and Interdisciplinary Research - Sixth International Conference on the Physics of Dusty Plasmas, ICPDP6
Pages86-91
Number of pages6
DOIs
StatePublished - 2011
Event6th International Conference on the Physics of Dusty/Complex Plasmas: Basic and Interdisciplinary Research, ICPDP6 - Garmisch-Partenkirchen, Germany
Duration: 16 May 201120 May 2011

Publication series

NameAIP Conference Proceedings
Volume1397
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Conference on the Physics of Dusty/Complex Plasmas: Basic and Interdisciplinary Research, ICPDP6
Country/TerritoryGermany
CityGarmisch-Partenkirchen
Period16/05/1120/05/11

Keywords

  • complex plasmas
  • Dusty plasmas
  • electrostatic waves
  • modulational instability
  • solitons

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