Instabilities in Yukawa Liquids |
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| Authors: | M Rosenberg G J Kalman P Hartmann |
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| Institution: | 1. Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92093‐ 0407, USA;2. Department of Physics, Boston College, Chestnut Hill, MA 02467, USA;3. Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, H‐1525 Budapest, P. O. Box 49, Hungary |
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| Abstract: | A strongly coupled Yukawa liquid is a system of charged particles which interact via a screened Coulomb interaction and in which the electrostatic energy between neighboring particles is larger than their thermal energy but not large enough for crystallization. Various plasma systems including ultracold neutral plasmas and complex (dusty) plasmas can exist in this strongly coupled liquid phase.Here we investigate instabilities driven by the relative streaming of plasma components in three‐dimensional Yukawa liquids with a focus on complex plasmas. This includes a dust acoustic instability driven by weakly coupled ions streaming through the dust liquid, and a dust‐dust instability driven by the counter‐streaming of strongly coupled dust grains. Compared to the Vlasov behavior we find there can be a substantial modification of the unstable wavenumber spectrum due to strong coupling effects (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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| Keywords: | Dusty plasma Yukawa liquid instabilities |
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