Global dust density in two-dimensional complex plasma

doi:10.1088/1674-1056/ad2a76

中国物理B ›› 2024, Vol. 33 ›› Issue (6): 65201-065201.doi: 10.1088/1674-1056/ad2a76

Global dust density in two-dimensional complex plasma

Yi-Zhen Zhao(赵逸真)¹, Song-Fen Liu(刘松芬)^1,‡, Wei Kong(孔伟)^2,§, and Fang Yang(杨芳)²

1 School of Physics, Nankai University, Tianjin 300071, China;
2 College of Science, Civil Aviation University of China, Tianjin 300300, China

收稿日期:2023-12-25 修回日期:2024-02-02 接受日期:2024-02-19 出版日期:2024-06-18 发布日期:2024-06-18
通讯作者: Song-Fen Liu, Wei Kong E-mail:lsfnku@nankai.edu.cn;wkong@cauc.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12275354 and 11805272) and the Civil Aviation University of China (Grant No. 3122023PT08).

Global dust density in two-dimensional complex plasma

Yi-Zhen Zhao(赵逸真)¹, Song-Fen Liu(刘松芬)^1,‡, Wei Kong(孔伟)^2,§, and Fang Yang(杨芳)²

1 School of Physics, Nankai University, Tianjin 300071, China;
2 College of Science, Civil Aviation University of China, Tianjin 300300, China

Received:2023-12-25 Revised:2024-02-02 Accepted:2024-02-19 Online:2024-06-18 Published:2024-06-18
Contact: Song-Fen Liu, Wei Kong E-mail:lsfnku@nankai.edu.cn;wkong@cauc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12275354 and 11805272) and the Civil Aviation University of China (Grant No. 3122023PT08).

摘要/Abstract

摘要： The driven-dissipative Langevin dynamics simulation is used to produce a two-dimensional (2D) dense cloud, which is composed of charged dust particles trapped in a quadratic potential. A 2D mesh grid is built to analyze the center-to-wall dust density. It is found that the local dust density in the outer region relative to that of the inner region is more nonuniform, being consistent with the feature of quadratic potential. The dependences of the global dust density on equilibrium temperature, particle size, confinement strength, and confinement shape are investigated. It is found that the particle size, the confinement strength, and the confinement shape strongly affect the global dust density, while the equilibrium temperature plays a minor effect on it. In the direction where there is a stronger confinement, the dust density gradient is bigger.

关键词: dust particles, quadratic potential, two-dimensional mesh grid

Abstract: The driven-dissipative Langevin dynamics simulation is used to produce a two-dimensional (2D) dense cloud, which is composed of charged dust particles trapped in a quadratic potential. A 2D mesh grid is built to analyze the center-to-wall dust density. It is found that the local dust density in the outer region relative to that of the inner region is more nonuniform, being consistent with the feature of quadratic potential. The dependences of the global dust density on equilibrium temperature, particle size, confinement strength, and confinement shape are investigated. It is found that the particle size, the confinement strength, and the confinement shape strongly affect the global dust density, while the equilibrium temperature plays a minor effect on it. In the direction where there is a stronger confinement, the dust density gradient is bigger.

Key words: dust particles, quadratic potential, two-dimensional mesh grid

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

52.27.Lw

52.27.Gr (Strongly-coupled plasmas) 52.65.-y (Plasma simulation)

Yi-Zhen Zhao(赵逸真), Song-Fen Liu(刘松芬), Wei Kong(孔伟), and Fang Yang(杨芳). Global dust density in two-dimensional complex plasma[J]. 中国物理B, 2024, 33(6): 65201-065201.

Yi-Zhen Zhao(赵逸真), Song-Fen Liu(刘松芬), Wei Kong(孔伟), and Fang Yang(杨芳). Global dust density in two-dimensional complex plasma[J]. Chin. Phys. B, 2024, 33(6): 65201-065201.

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Global dust density in two-dimensional complex plasma

Global dust density in two-dimensional complex plasma

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