Cycloid motions of grains in a dust plasma

doi:10.1088/1674-1056/25/2/025201

中国物理B ›› 2016, Vol. 25 ›› Issue (2): 25201-025201.doi: 10.1088/1674-1056/25/2/025201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Cycloid motions of grains in a dust plasma

Yong-Liang Zhang(张永亮), Fan Feng(冯帆), Fu-Cheng Liu(刘富成), Li-Fang Dong(董丽芳), 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

收稿日期:2015-08-21 修回日期:2015-10-23 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: Ya-Feng He E-mail:Heyf@hbu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11205044 and 11405042), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2011201006 and A2012201015), the Research Foundation of Education Bureau of Hebei Province, China (Grant No. Y2012009), the Program for Young Principal Investigators of Hebei Province, and the Midwest Universities Comprehensive Strength Promotion Project.

Cycloid motions of grains in a dust plasma

Yong-Liang Zhang(张永亮), Fan Feng(冯帆), Fu-Cheng Liu(刘富成), Li-Fang Dong(董丽芳), 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

Received:2015-08-21 Revised:2015-10-23 Online:2016-02-05 Published:2016-02-05
Contact: Ya-Feng He E-mail:Heyf@hbu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11205044 and 11405042), the Natural Science Foundation of Hebei Province, China (Grant Nos. A2011201006 and A2012201015), the Research Foundation of Education Bureau of Hebei Province, China (Grant No. Y2012009), the Program for Young Principal Investigators of Hebei Province, and the Midwest Universities Comprehensive Strength Promotion Project.

摘要/Abstract

摘要： Hypocycloid and epicycloid motions of irregular grains (pine pollen) are observed for the first time in a dust plasma in a two-dimensional (2D) horizontal plane. These cycloid motions can be regarded as a combination of a primary circle and a secondary circle. An inverse Magnus force originating from the spin of the irregular grain gives rise to the primary circle. Radial confinement resulting from the electrostatic force and the ion drag force, together with inverse Magnus force, plays an important role in the formation of the secondary circle. In addition, the cyclotron radius is seen to change periodically during the cycloid motion. Force analysis and comparison experiments have shown that the cycloid motions are distinctive features of an irregular grain immersed in a plasma.

关键词: dust plasma, irregular grain, cycloid motions

Abstract: Hypocycloid and epicycloid motions of irregular grains (pine pollen) are observed for the first time in a dust plasma in a two-dimensional (2D) horizontal plane. These cycloid motions can be regarded as a combination of a primary circle and a secondary circle. An inverse Magnus force originating from the spin of the irregular grain gives rise to the primary circle. Radial confinement resulting from the electrostatic force and the ion drag force, together with inverse Magnus force, plays an important role in the formation of the secondary circle. In addition, the cyclotron radius is seen to change periodically during the cycloid motion. Force analysis and comparison experiments have shown that the cycloid motions are distinctive features of an irregular grain immersed in a plasma.

Key words: dust plasma, irregular grain, cycloid motions

中图分类号: (Dusty or complex plasmas; plasma crystals)

52.27.Lw

52.40.Kh (Plasma sheaths) 52.90.+z (Other topics in physics of plasmas and electric discharges)

张永亮, 冯帆, 刘富成, 董丽芳, 贺亚峰. Cycloid motions of grains in a dust plasma[J]. 中国物理B, 2016, 25(2): 25201-025201.

Yong-Liang Zhang(张永亮), Fan Feng(冯帆), Fu-Cheng Liu(刘富成), Li-Fang Dong(董丽芳), Ya-Feng He(贺亚峰). Cycloid motions of grains in a dust plasma[J]. Chin. Phys. B, 2016, 25(2): 25201-025201.

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Cycloid motions of grains in a dust plasma

Cycloid motions of grains in a dust plasma

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