Higher order structure in a complex plasma

Z. Donkó, P. Hartmann, P. Magyar, G. J. Kalman, K. I. Golden

Research output: Contribution to journalArticle

Abstract

The direct experimental determination of the 3-point static structure function S(3)(k1, k2, k0) of a 2-dimensional dusty plasma liquid is presented. The measurements are complemented by molecular dynamics simulations of the system, using parameters (dust charge, plasma frequency, coupling and screening coefficients), which are derived from the experimentally obtained 2-point static structure function S(2), as well as the dynamic structure function and current-current fluctuation spectra. The experimental results of S(3) are in good agreement with those of the simulations, including the (low wavenumber) domain, where S(3) acquires negative values. The "Convolution Approximation" (giving S(3) in a factorized form of S(2) functions) clearly breaks down in this domain; however, it is found to be a useful aid for explaining the main features of the S(3)(k1, k2, k0) functions, for which (experimental and simulation) maps are presented at selected values of one of its arguments.

Original languageEnglish
Article number103701
JournalPhysics of Plasmas
Volume24
Issue number10
DOIs
Publication statusPublished - Oct 1 2017

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simulation
dusty plasmas
plasma frequencies
coefficients
coupling coefficients
convolution integrals
screening
breakdown
dust
molecular dynamics
liquids
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Donkó, Z., Hartmann, P., Magyar, P., Kalman, G. J., & Golden, K. I. (2017). Higher order structure in a complex plasma. Physics of Plasmas, 24(10), [103701]. https://doi.org/10.1063/1.4990510

Higher order structure in a complex plasma. / Donkó, Z.; Hartmann, P.; Magyar, P.; Kalman, G. J.; Golden, K. I.

In: Physics of Plasmas, Vol. 24, No. 10, 103701, 01.10.2017.

Research output: Contribution to journalArticle

Donkó, Z, Hartmann, P, Magyar, P, Kalman, GJ & Golden, KI 2017, 'Higher order structure in a complex plasma', Physics of Plasmas, vol. 24, no. 10, 103701. https://doi.org/10.1063/1.4990510
Donkó Z, Hartmann P, Magyar P, Kalman GJ, Golden KI. Higher order structure in a complex plasma. Physics of Plasmas. 2017 Oct 1;24(10). 103701. https://doi.org/10.1063/1.4990510
Donkó, Z. ; Hartmann, P. ; Magyar, P. ; Kalman, G. J. ; Golden, K. I. / Higher order structure in a complex plasma. In: Physics of Plasmas. 2017 ; Vol. 24, No. 10.
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