| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Structures and Dynamics of Two-Dimensional Dust Lattices with and without Coulomb Molecules in Plasmas |
| HUANG Feng1**, LIU Yan-Hong2, YE Mao-Fu2, WANG Xue-Jin1, WANG Long2
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1College of Science, China Agricultural University, Beijing 100083
2Institute of Physics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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HUANG Feng, LIU Yan-Hong, YE Mao-Fu et al 2010 Chin. Phys. Lett. 27 115201 |
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Abstract Structures and dynamics of two-dimensional dust lattices with and without Coulomb molecules in plasmas are investigated. The experimental results show that the lattices have the crystal-like hexagonal structures, i.e. most particles have six nearest-neighboring particles. However, the lattice points can be occupied by the individual particles or by a pair of particles called Coulomb molecules. The pair correlation function is used to compare the structures between the lattices with or without the Coulomb molecules. In the experiments, the Coulomb molecules can also decompose and recombine with another individual particle to form a new molecule.
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| Keywords:
52.27.Lw
52.27.Gr
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Received: 26 August 2010
Published: 22 October 2010
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| PACS: |
52.27.Lw
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(Dusty or complex plasmas; plasma crystals)
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52.27.Gr
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(Strongly-coupled plasmas)
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