Observation of Vortex Patterns in a Magnetized Dusty Plasma System

• 来源期刊: 等离子体科学和技术（英文版）
• 年，卷（期）: 2007,（1）
• 页码范围: 11-14
• 页数: 4页
• 语种: 英文

摘要

Vortex patterns of dust particles have been observed in a magnetized dusty plasma system. The formation mechanism of two-dimensional (2D) vortex patterns has been investigated by analysing the forces acting on dust particles and molecular dynamics (MD) simulations in a 2D confined magnetized dusty plasma. It has been found that with a weak confining electric field and a strong magnetic field, the particles' trajectories will form a vortex shape. The simulation results agree with our experimental observations. In our experiments, vortex patterns can be induced via circular rotation of particles by changing the rf (radio-frequency) power in a magnetized dusty plasma.