Slow test charge response in a dusty plasma with Kappa distributed electrons and ions

S Ali; B Eliasson

doi:10.1088/1402-4896/aa7c09

Slow test charge response in a dusty plasma with Kappa distributed electrons and ions

S Ali, B Eliasson

Research output: Contribution to journal › Article

2 Citations (Scopus)

22 Downloads (Pure)

Abstract

The electrostatic potential around a slowly moving test charge is studied in a dusty plasma where the ions and electrons follow a powerlaw Kappa distribution in velocity space. A test charge moving with a speed much smaller than the dust thermal speed gives rise to a short-scale Debye-Hueckel potential as well as a long-range far-field potential decreasing as inverse cube of the distance to the test charge along the propagation direction. The potentials are significantly modified in the presence of high-energy tails, modeled by lower spectral indices in the ion and electron Kappa distribution functions. Plasma parameters relevant to laboratory dusty plasmas are discussed.

Original language	English
Article number	084003
Number of pages	6
Journal	Physica Scripta
Volume	92
Issue number	8
DOIs	https://doi.org/10.1088/1402-4896/aa7c09
Publication status	Published - 17 Jul 2017

Fingerprint

dusty plasmas

Plasma

Charge

Electron

ions

electrons

Far Field

Electrostatics

Regular hexahedron

High Energy

Tail

Power Law

Distribution Function

Propagation

far fields

dust

distribution functions

electrostatics

Range of data

propagation

Keywords

test charge
dusty plasma

Cite this

Ali, S., & Eliasson, B. (2017). Slow test charge response in a dusty plasma with Kappa distributed electrons and ions. Physica Scripta, 92(8), [084003]. https://doi.org/10.1088/1402-4896/aa7c09

Ali, S ; Eliasson, B. / Slow test charge response in a dusty plasma with Kappa distributed electrons and ions. In: Physica Scripta. 2017 ; Vol. 92, No. 8.

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Ali, S & Eliasson, B 2017, 'Slow test charge response in a dusty plasma with Kappa distributed electrons and ions', Physica Scripta, vol. 92, no. 8, 084003. https://doi.org/10.1088/1402-4896/aa7c09

Slow test charge response in a dusty plasma with Kappa distributed electrons and ions. / Ali, S; Eliasson, B.

In: Physica Scripta, Vol. 92, No. 8, 084003, 17.07.2017.

Research output: Contribution to journal › Article

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AU - Ali, S

AU - Eliasson, B

PY - 2017/7/17

Y1 - 2017/7/17

N2 - The electrostatic potential around a slowly moving test charge is studied in a dusty plasma where the ions and electrons follow a powerlaw Kappa distribution in velocity space. A test charge moving with a speed much smaller than the dust thermal speed gives rise to a short-scale Debye-Hueckel potential as well as a long-range far-field potential decreasing as inverse cube of the distance to the test charge along the propagation direction. The potentials are significantly modified in the presence of high-energy tails, modeled by lower spectral indices in the ion and electron Kappa distribution functions. Plasma parameters relevant to laboratory dusty plasmas are discussed.

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KW - dusty plasma

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