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Observation of Vortex Patterns in a Magnetized Dusty Plasma System

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【Author】 HUANG Feng YE Maofu WANG Long LIU Yanhong 1 College of Science,China Agricultural University,Beijing 100083,China 2 Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China 3 Department of Chemistry,University of Antwerp,Universiteitsplei 1,B-2610 Antwerp,Belgium

【机构】 College of Science,China Agricultural University,Beijing 100083,China Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China； Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China； Department of Chemistry,University of Antwerp,Universiteitsplei 1,B-2610 Antwerp,Belgium；

【摘要】 <正> Vortex patterns of dust particles have been observed in a magnetized dusty plasmasystem.The formation mechanism of two-dimensional(2D)vortex patterns has been investigatedby analysing the forces acting on dust particles and molecular dynamics(MD)simulations in a 2Dconfined magnetized dusty plasma.It has been found that with a weak confining electric field anda strong magnetic field,the particles’trajectories will form a vortex shape.The simulation resultsagree with our experimental observations.In our experiments,vortex patterns can be induced viacircular rotation of particles by changing the rf(radio-frequency) power in a magnetized dustyplasma.更多还原

【Abstract】 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.更多还原

【关键词】 dusty plasma； vortex pattern； molecular dynamic simulation；
【Key words】 dusty plasma； vortex pattern； molecular dynamic simulation；

【基金】 ’the Research Start-Up Fund of China Agricultural University(No.2005057)

【文献出处】 Plasma Science and Technology ,等离子体科学和技术(英文版) , 编辑部邮箱 ,2007年01期

【分类号】O441.2
【下载频次】1

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