PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Rotation of a single vortex in dusty plasma |
Jia Yan(闫佳), Fan Feng(冯帆), Fu-Cheng Liu(刘富成), Ya-Feng He(贺亚峰) |
Hebei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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Abstract A single vortex is obtained in radio-frequency capacitive discharge in argon gas. The dust subsystem is confined in the horizontal plane with an asymmetrical saw structure placed on the lower electrode. The vortex rotates as a whole along the long side of the saw-teeth. Asymmetry of the saw structure plays an important role in the rotation of the vortex. Nonzero curl of the total force resulting from the local ion flow and the electric field in the plasma sheath could be attributed to the persistent rotation of vortex.
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Received: 13 March 2017
Revised: 22 May 2017
Accepted manuscript online:
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PACS:
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52.27.Lw
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(Dusty or complex plasmas; plasma crystals)
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52.27.Gr
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(Strongly-coupled plasmas)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11205044 and 11405042), the Program for Young Principal Investigators of Hebei Province, China,the Natural Science Foundation of Hebei University, China (Grant No. 2011JQ04), the NaturalScience Fund for Excellent Young Scholars of Hebei Province, China(Grant No. A2017201099), and the Midwest Universities Comprehensive Strength Promotion Project, China. |
Corresponding Authors:
Ya-Feng He
E-mail: heyf@hbu.edu.cn
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Cite this article:
Jia Yan(闫佳), Fan Feng(冯帆), Fu-Cheng Liu(刘富成), Ya-Feng He(贺亚峰) Rotation of a single vortex in dusty plasma 2017 Chin. Phys. B 26 095202
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