Change search
ReferencesLink to record
Permanent link

Direct link
Kinetic models of partially ionized complex plasmas in the low frequency regime
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0001-9632-8104
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
2011 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 18, no 7, 073705- p.Article in journal (Refereed) Published
Abstract [en]

The results from three kinetic models of complex plasmas taking into account collisions with neutrals are compared in the low-frequency regime: The "full" model which considers the absorption of plasma fluxes on dust particles and dust charge fluctuations, the "multi-component" model where both these effects are neglected, and the "standard" model which takes into account the dust charge perturbations but not the absorption of fluxes. We derive and numerically evaluate expressions of the low frequency responses of these models, also taking into account the modification of the capture cross-sections due to the effect of neutrals. The role of plasma sources and collisions with neutrals is assessed by computing the plasma permittivities and static permittivities for all the three models.

Place, publisher, year, edition, pages
2011. Vol. 18, no 7, 073705- p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-38966DOI: 10.1063/1.3615030ISI: 000293474500057ScopusID: 2-s2.0-79961158902OAI: diva2:438804
Swedish Research Council
QC 20110905Available from: 2011-09-05 Created: 2011-09-05 Last updated: 2012-03-16Bibliographically 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.
Trita-EE, ISSN 1653-5146 ; 2012:008
complex plasmas, dusty plasmas, Klimontovich equations, kinetic theory, dust acoustic waves, collision integrals
National Category
Fusion, Plasma and Space Physics
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)
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

Search in DiVA

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

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 89 hits
ReferencesLink to record
Permanent link

Direct link