Drift vortices in inhomogeneous collisional dusty magnetoplasma  

作　　者：杨建荣 吕岿 许磊 毛杰键 刘希忠 刘萍 

机构地区：[1]School of Physics and Electronic Information,Shangrao Normal University [2]Institute of Nonlinear Science,Shaoxing University [3]College of Electron and Information Engineering,University of Electronic Science and Technology of China Zhongshan Institute

出　　处：《Chinese Physics B》2017年第6期228-233,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11365017,11465015,11405110,11305031,and 11404214);the Technology Landing Project of the Education Department of Jiangxi Province of China(Grant No.KJLD13086)

摘　　要：For the sake of investigating the drift coherent vortex structure in an inhomogeneous dense dusty magnetoplasma,using the quantum hydrodynamic model a nonlinear controlling equation is deduced when the collision effect is considered.New vortex solutions of the electrostatic potential are obtained by a special transformation method, and three evolutive cases of monopolar vortex chains with spatial and temporal distribution are analyzed by representative parameters. It is found that the collision frequency, particle density, drift velocity, dust charge number, electron Fermi wavelength, quantum correction,and quantum parameter are all influencing factors of the vortex evolution. Compared to the uniform dusty system, the vortex solutions of the inhomogeneous system present richer spatial evolution and physical meaning. These results may explain corresponding vortex phenomena and support beneficial references for the dense dusty plasma atmosphere.For the sake of investigating the drift coherent vortex structure in an inhomogeneous dense dusty magnetoplasma,using the quantum hydrodynamic model a nonlinear controlling equation is deduced when the collision effect is considered.New vortex solutions of the electrostatic potential are obtained by a special transformation method, and three evolutive cases of monopolar vortex chains with spatial and temporal distribution are analyzed by representative parameters. It is found that the collision frequency, particle density, drift velocity, dust charge number, electron Fermi wavelength, quantum correction,and quantum parameter are all influencing factors of the vortex evolution. Compared to the uniform dusty system, the vortex solutions of the inhomogeneous system present richer spatial evolution and physical meaning. These results may explain corresponding vortex phenomena and support beneficial references for the dense dusty plasma atmosphere.

关 键 词：drift vortices dusty magnetoplasma quantum hydrodynamic model 

分 类 号：O53[理学—等离子体物理]