| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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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 |
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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.
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Received: 25 December 2023
Revised: 02 February 2024
Accepted manuscript online: 19 February 2024
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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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52.65.-y
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(Plasma simulation)
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| Fund: 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). |
Corresponding Authors:
Song-Fen Liu, Wei Kong
E-mail: lsfnku@nankai.edu.cn;wkong@cauc.edu.cn
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Cite this article:
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 2024 Chin. Phys. B 33 065201
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