Direct observation of mode-coupling instability in two-dimensional plasma crystals
Plasma Physics
2015-05-18 v1
Abstract
Dedicated experiments on melting of 2D plasma crystals were carried out. The melting was always accompanied by spontaneous growth of the particle kinetic energy, suggesting a universal plasma-driven mechanism underlying the process. By measuring three principal dust-lattice (DL) wave modes simultaneously, it is unambiguously demonstrated that the melting occurs due to the resonance coupling between two of the DL modes. The variation of the wave modes with the experimental conditions, including the emergence of the resonant (hybrid) branch, reveals exceptionally good agreement with the theory of mode-coupling instability.
Cite
@article{arxiv.1003.4479,
title = {Direct observation of mode-coupling instability in two-dimensional plasma crystals},
author = {L. Couëdel and V. Nosenko and A. V. Ivlev and S. K. Zhdanov and H. M. Thomas and G. E. Morfill},
journal= {arXiv preprint arXiv:1003.4479},
year = {2015}
}
Comments
4 pages, submitted to Physical Review Letters