Direct Observation of Mode-Coupling Instability in Two-Dimensional Plasma Crystals

被引：144

作者：

Couedel, L. ^{[1
]}

Nosenko, V. ^{[1
]}

Ivlev, A. V. ^{[1
]}

Zhdanov, S. K. ^{[1
]}

Thomas, H. M. ^{[1
]}

Morfill, G. E. ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 19期

关键词：

GRAIN-BOUNDARY THEORY; DUST PARTICLES;

D O I：

10.1103/PhysRevLett.104.195001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dedicated experiments on melting of two-dimensional 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 wave modes simultaneously, it is unambiguously demonstrated that the melting occurs due to the resonance coupling between two of the dust-lattice 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.

引用

页数：4

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