Low-frequency electrostatic modes in partially ionized complex plasmas: a kinetic approach

Tolias, Panagiotis

doi:10.1088/1367-2630/14/1/013002

Cited by 4 publications

(2 citation statements)

References 46 publications

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“…[13] The emerging Klimontovich equations, with the aid of the full arsenal of fluctuation theory and some additional assumptions, have been employed for the study of the dust-plasma collision integrals, [14,15] the dust-dust collision integrals, [16] the dust charge fluctuations and average distribution, [17] the dust and plasma hydrodynamic equations, [18] the spectral densities of fluctuations, [19] and the low frequency electrostatic modes. [20,21] The heuristic approach has predicted fascinating phenomena such as the stochastic heating of dust particles under astrophysical conditions. [22] The stochastic heating of dust is a general process, similar to second-order Fermi acceleration, that is based on the non-conservation of energy in dust-dust interactions as a consequence of dust charge fluctuations.…”

Section: Introductionmentioning

confidence: 99%

On the Klimontovich description of complex (dusty) plasmas

Tolias

2023

Contrib. Plasma Phys

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The numerous idealizations that are involved in the exact microscopic statistical description of complex (dusty) plasmas are discussed in detail. The two prevailing approaches in the Klimontovich description of dusty plasmas are reviewed in a pedagogical manner. The continuous phase space approximation is introduced, within which the more rigorous treatment should collapse to the more heuristic treatment. The plasma Klimontovich equations are shown to be identical, but there are marked differences in the dust Klimontovich equations whose origin is analysed in depth.

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Section: Introductionmentioning

confidence: 99%

On the Klimontovich description of complex (dusty) plasmas

Tolias

2023

Contrib. Plasma Phys

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“…Thus, dusty plasmas are non-multicomponent in nature and the permittivity also contains a number of mixed responses (Tsytovich & de Angelis 1999). Another major difference concerns the dissipative nature of dusty plasmas, especially in the presence of neutrals (Tsytovich et al 2005;Tolias 2012). Inevitably, the question arises whether there exist parameter regimes where dusty plasmas can be described by collisionless multicomponent fluctuation theory.…”

Section: Introductionmentioning

confidence: 99%

The finite probe size effect in fluctuation measurements; application to dusty plasmas

et al. 2016

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The effect of the finite probe size in plasma fluctuation measurements is revisited for dusty plasmas, where it has been argued that dust leads to a significant low-frequency enhancement in the spectral densities of ion density fluctuations, which can constitute the physical basis of a dust diagnostic technique. Theoretical predictions for the spectral modifications are presented and the dust acoustic mode contribution is analysed. The finite probe size effect is treated within the volume average approach, which introduces geometry dependent form factors that are calculated for spherical and cylindrical probes. The volume average approach is compared with the typically employed cutoff wavenumber approximation for various dust and plasma parameters. The contribution of temperature fluctuations to the spectral density of current fluctuations is also evaluated.

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Effects of dust particles in plasma kinetics: Ion dynamics time scales

2012

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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.

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Low-frequency electrostatic modes in partially ionized complex plasmas: a kinetic approach

Cited by 4 publications

References 46 publications

On the Klimontovich description of complex (dusty) plasmas

On the Klimontovich description of complex (dusty) plasmas

The finite probe size effect in fluctuation measurements; application to dusty plasmas

Effects of dust particles in plasma kinetics: Ion dynamics time scales

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