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 language | English |
|---|---|
| Title of host publication | DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH |
| Editors | VY Nosenko, PK Shukla, MH Thoma, HM Thomas |
| Place of Publication | MELVILLE |
| Publisher | AMER INST PHYSICS |
| Pages | 86-91 |
| Number of pages | 6 |
| Volume | 1397 |
| ISBN (Print) | 978-0-7354-0967-5 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | 6th International Conference on the Physics of Dusty Plasmas (ICPDP) - Garmisch-Partenkirchen, Germany Duration: 16 May 2011 → 20 May 2011 |
Conference
| Conference | 6th International Conference on the Physics of Dusty Plasmas (ICPDP) |
|---|---|
| Country | Germany |
| City | Garmisch-Partenkirchen |
| Period | 16/05/2011 → 20/05/2011 |
Cite this
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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 proceeding › Conference contribution
TY - GEN
T1 - Electrostatic waves in superthermal dusty plasmas: review of recent advancement
AU - Kourakis, I.
AU - Sultana, S.
PY - 2011
Y1 - 2011
N2 - 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).
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).
U2 - 10.1063/1.3659745
DO - 10.1063/1.3659745
M3 - Conference contribution
SN - 978-0-7354-0967-5
VL - 1397
SP - 86
EP - 91
BT - DUSTY/COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH
A2 - Nosenko, VY
A2 - Shukla, PK
A2 - Thoma, MH
A2 - Thomas, HM
PB - AMER INST PHYSICS
CY - MELVILLE
ER -