Electrostatic waves in superthermal dusty plasmas: review of recent advancement

I. Kourakis, S. Sultana

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

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 languageEnglish
Title of host publicationDUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH
EditorsVY Nosenko, PK Shukla, MH Thoma, HM Thomas
Place of PublicationMELVILLE
PublisherAMER INST PHYSICS
Pages86-91
Number of pages6
Volume1397
ISBN (Print)978-0-7354-0967-5
DOIs
Publication statusPublished - 2011
Event6th International Conference on the Physics of Dusty Plasmas (ICPDP) - Garmisch-Partenkirchen, Germany
Duration: 16 May 201120 May 2011

Conference

Conference6th International Conference on the Physics of Dusty Plasmas (ICPDP)
CountryGermany
CityGarmisch-Partenkirchen
Period16/05/201120/05/2011

Cite this

Kourakis, I., & Sultana, S. (2011). Electrostatic waves in superthermal dusty plasmas: review of recent advancement. In VY. Nosenko, PK. Shukla, MH. Thoma, & HM. Thomas (Eds.), DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH (Vol. 1397, pp. 86-91). MELVILLE: AMER INST PHYSICS. https://doi.org/10.1063/1.3659745
Kourakis, I. ; Sultana, S. / Electrostatic waves in superthermal dusty plasmas: review of recent advancement. DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH. editor / VY Nosenko ; PK Shukla ; MH Thoma ; HM Thomas. Vol. 1397 MELVILLE : AMER INST PHYSICS, 2011. pp. 86-91
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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).",
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Kourakis, I & Sultana, S 2011, Electrostatic waves in superthermal dusty plasmas: review of recent advancement. in VY Nosenko, PK Shukla, MH Thoma & HM Thomas (eds), DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH. vol. 1397, AMER INST PHYSICS, MELVILLE, pp. 86-91, 6th International Conference on the Physics of Dusty Plasmas (ICPDP), Garmisch-Partenkirchen, Germany, 16/05/2011. https://doi.org/10.1063/1.3659745

Electrostatic waves in superthermal dusty plasmas: review of recent advancement. / Kourakis, I.; Sultana, S.

DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH. ed. / VY Nosenko; PK Shukla; MH Thoma; HM Thomas. Vol. 1397 MELVILLE : AMER INST PHYSICS, 2011. p. 86-91.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - 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).

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BT - DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH

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Kourakis I, Sultana S. Electrostatic waves in superthermal dusty plasmas: review of recent advancement. In Nosenko VY, Shukla PK, Thoma MH, Thomas HM, editors, DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH. Vol. 1397. MELVILLE: AMER INST PHYSICS. 2011. p. 86-91 https://doi.org/10.1063/1.3659745