Effects of Dipole Moment on the Lattice Waves in One-Dimensional Dust Chain  

作　　者：王春华 王晓钢 

机构地区：[1]State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Department of Physics, and College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024

出　　处：《Chinese Physics Letters》2006年第2期403-406,共4页中国物理快报（英文版）

摘　　要：Effects of dipole moment on the horizontal dust lattice waves in one-dimensional dust chain are investigated. The general dispersion relations are derived. The waves are sensitive to the direction of the dipole moment, which has an angle θ （0≤ θ≤π） with respect to the vertical direction. When the waves are self-excited, it is shown that the real part of frequency for longitudinal wave is increased, while it is decreased for the horizontal transverse wave with increasing θ. When the waves are externally exited, both the real and imaginary parts of wave number are decreased for the longitudinal and transverse waves with increasing θ.Effects of dipole moment on the horizontal dust lattice waves in one-dimensional dust chain are investigated. The general dispersion relations are derived. The waves are sensitive to the direction of the dipole moment, which has an angle θ （0≤ θ≤π） with respect to the vertical direction. When the waves are self-excited, it is shown that the real part of frequency for longitudinal wave is increased, while it is decreased for the horizontal transverse wave with increasing θ. When the waves are externally exited, both the real and imaginary parts of wave number are decreased for the longitudinal and transverse waves with increasing θ.

关 键 词：ART. NO. 43 PLASMA CRYSTALS PARTICLES FLOW 

分 类 号：O7[理学—晶体学]