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arXiv · 1105.6223

Wave mode coupling due to plasma wakes in two-dimensional plasma crystals: In-depth view

L. Couëdel·S. K. Zhdanov·A. V. Ivlev·V. Nosenko·H. M. Thomas·G. E. Morfill
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Abstract

Experiments with two-dimensional (2D) plasma crystals are usually carried out in rf plasma sheaths, where the interparticle interactions are modified due to the presence of plasma wakes. The wake-mediated interactions result in the coupling between wave modes in 2D crystals, which can trigger the mode-coupling instability and cause melting. The theory predicts a number of distinct fingerprints to be observed upon the instability onset, such as the emergence of a new hybrid mode, a critical angular dependence, a mixed polarization, and distinct thresholds. In this paper we summarize these key features and provide their detailed discussion, analyze the critical dependence on experimental parameters, and highlight the outstanding issues.

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L. Couëdel, S. K. Zhdanov, A. V. Ivlev, V. Nosenko, H. M. Thomas, G. E. Morfill. 2011-05-31. Wave mode coupling due to plasma wakes in two-dimensional plasma crystals: In-depth view. https://doi.org/10.1063/1.3620406

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