Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Effects of dust particles in plasma kinetics; ion dynamics time scales
KTH, School of Electrical Engineering (EES), Space and Plasma Physics. (Complex Plasmas)ORCID iD: 0000-0001-9632-8104
KTH, School of Electrical Engineering (EES), Space and Plasma Physics. (Complex Plasmas)ORCID iD: 0000-0002-6712-3625
2012 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, no 7, 073701- p.Article in journal (Refereed) Published
Abstract [en]

The self-consistent kinetic theory of dusty plasmas [V. N. Tsytovich and U. de Angelis, Phys. Plasmas 6, 1093 (1999)] is extended to frequency regimes relevant for ion dynamics, accounting for both constant and fluctuating plasma sources. In contrast to earlier models, binary plasma collisions are no longer neglected with respect to collisions with dust; hence, the model developed here is also valid for low dust densities. Expressions are found for the system's permittivity, the ion collision integral, and the spectral densities of ion density fluctuations. The structure of the ion kinetic equation is analyzed, and applications of the model for both astrophysical and laboratory environments are discussed.

Place, publisher, year, edition, pages
2012. Vol. 19, no 7, 073701- p.
Keyword [en]
complex plasmas, dusty plasmas, kinetic models, Klimontovich equation, plasma discreteness, collision integrals, Lennard-Balescu, spectral densities, permittivity
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-91513DOI: 10.1063/1.4728084ISI: 000307422800128Scopus ID: 2-s2.0-84866952042OAI: oai:DiVA.org:kth-91513DiVA: diva2:510524
Funder
Swedish Research Council
Note

QC 20120928

Available from: 2012-03-16 Created: 2012-03-16 Last updated: 2017-12-07Bibliographically approved
In thesis
1. The Klimontovich description of complex plasma systems: Low frequency electrostatic modes, spectral densities of fluctuations and collision integrals
Open this publication in new window or tab >>The Klimontovich description of complex plasma systems: Low frequency electrostatic modes, spectral densities of fluctuations and collision integrals
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Plasmas seeded with solid particulates of nanometer to micron sizes (complex plasma systems) are a ubiquitous feature of intergalactic, interstellar and planetary environments but also of plasma processing applications or even fusion devices.

Their novel aspects compared with ideal multi-component plasmas stem from (i) the large number of elementary charges residing on the grain surface, (ii) the variability of the charge over mass ratio of the dust component, (iii) the inherent openness and dissipative nature of such systems.

 

Their statistical description presents a major challenge; On one hand by treating dust grains as point particles new phase space variables must be introduced augmenting the classical Hamiltonian phase space, while the microphysics of interaction between the plasma and the grains will introduce additional coupling between the kinetic equations of each species, apart from the usual fine-grained electromagnetic field coupling. On the other hand complex plasma systems do not always exist in a gaseous state but can also condensate, i.e. form liquid, solid or crystalline states.

 

In this thesis we study gaseous partially ionized complex plasma systems from the perspective of the Klimontovich technique of second quantization in phase space. Initially, in regimes typical of dust dynamics. Starting from the Klimontovich equations for the exact phase space densities, theory deliverables such as the permittivity, the spectral densities of fluctuations and the collision integrals are implemented either for concrete predictions related to low frequency electrostatic waves or for diagnostic purposes related to the enhancement of the ion density and electrostatic potential fluctuation spectra due to the presence of dust grains. Particular emphasis is put to the comparison of the self-consistent kinetic model with multi-component kinetic models (treating dust as an additional massive charged species) as well as to the importance of the nature of the plasma particle source. Finally, a new kinetic model of complex plasmas (for both constant and fluctuating sources) is formulated. It is valid in regimes typical of ion dynamics, where plasma discreteness can no longer be neglected, and, in contrast to earlier models, does not require relatively large dust densities to be valid.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. xii, 164 p.
Series
Trita-EE, ISSN 1653-5146 ; 2012:008
Keyword
complex plasmas, dusty plasmas, Klimontovich equations, kinetic theory, dust acoustic waves, collision integrals
National Category
Fusion, Plasma and Space Physics
Identifiers
urn:nbn:se:kth:diva-91506 (URN)978-91-7501-284-1 (ISBN)
Public defence
2012-03-23, F3, Lindstedsvägen 26, KTH, Stockholm, 13:15 (English)
Opponent
Supervisors
Note
QC 20120316Available from: 2012-03-16 Created: 2012-03-16 Last updated: 2012-03-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Tolias, PanagiotisRatynskaia, Svetlana

Search in DiVA

By author/editor
Tolias, PanagiotisRatynskaia, Svetlana
By organisation
Space and Plasma Physics
In the same journal
Physics of Plasmas
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 121 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf