Structures and Dynamics of Two-Dimensional Dust Lattices with and without Coulomb Molecules in Plasmas  

作　　者：黄峰 刘艳红 叶茂福 王学进 王龙 

机构地区：[1]College of Science, China Agricultural University, Beijing 100083 [2]Institute of Physics, Chinese Academy of Sciences, Beiding 100190

出　　处：《Chinese Physics Letters》2010年第11期152-155,共4页中国物理快报（英文版）

基　　金：Supported by Chinese Universities Scientific Fund （No 2009JS33）, the Fundamental Research Funds for the Central Universities （2009-2-05）, and the National Natural Science Foundation of China under Grant No 60776039.

摘　　要：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.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.

关 键 词：Plasma physics 

分 类 号：O177.6[理学—数学] TB383[理学—基础数学]