Melting of 2D Coulomb clusters in dusty plasmasReport as inadecuate

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1 Interdisciplinary Graduate School of Engineering Sciences 2 Institut für Physik

Abstract : The melting of 2D dust clusters caused by one additional particle in the lower layer has experimentally been observed to undergo a two-step transition, which divides the phase of the cluster into three stages. The first transition is a jump of the dust kinetic energy due to the onset of an instability of the lower-layer particle, shifting the cluster from an ordinary to a hot crystalline state. The second transition is the actual phase transition into a liquid state, which occurs at a decisively lower gas pressure. The detailed dynamical properties of the system during the transition were determined in terms of the normal mode analysis.

keyword : complex plasma plasma crystal melting

Author: Ryuta Ichiki - Yuriy Ivanov - Matthias Wolter - Yoshinobu Kawai - André Melzer -



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