The Influence of the Ambipolar Field on the Levitation Conditions of Dust Particles in the Positive Column of the Glow Discharge With a Change the Spatial Orientation of the Discharge Tube

Ding, Zhe; Kudryavtsev, A. A.; Saifutdinov, A. I.; Sysoev, S. S.; Yuan, Chengxun; Li, Shubo; Yao, Jingfeng; Zhou, Zhongxiang

doi:10.1109/tps.2019.2932768

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…With proper dust parameters, the dust particles can levitate in the positive column under the action of gravity, thermophoretic force and axial electrostatic force for different discharge currents. Some of the experimental observation results of the levitation of dust particles under discharge current ranging from a few mA to a dozen mA are observed in [22,37]. The argon discharge pressure is 0.2 Torr, and for argon discharge studied in this work, the plasma components are reduced to four species: neutrals (Ar), electrons (e − ), ions (Ar + ) and metastable atoms (Ar * ) with excitation energy of 11.72 eV.…”

Section: Resultsmentioning

confidence: 84%

Simulation of DC glow discharge plasma with free-moving dust particles in the radial direction

Tian

Liang

Hao

et al. 2023

Plasma Sci. Technol.

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A self-consistent fluid model is developed to investigate the radial distributions of dusty plasma parameters in a DC glow discharge, in which the extended fluid approach of plasma particles and the transport equations of dust particles are coupled. The electrical interaction between charged dust particles is considered in the model. The time evolution of radial distributions of dust density, the plasma density, the radial component of electric field and the forces acted on dust particles when dust density tends to be stable are obtained and analyzed under different discharge currents and dust particle radius. It is shown that the dust density structure is determined mainly by the radial electrostatic force, thermophoretic force and ion drag force in the discharge tube, and both discharge current and dust particle radius have an obvious effect on the transport processes of dust particles. The dust particles gather in the center region of discharge tube for low discharge current and little dust radius, then dust-voids are formed and become wider when the discharge current and dust radius increase. The plasma parameters in the dust gathering region are affected obviously by the dust particles due to the charging processes of electrons and ions to dust surface.

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Section: Resultsmentioning

confidence: 84%

Simulation of DC glow discharge plasma with free-moving dust particles in the radial direction

Tian

Liang

Hao

et al. 2023

Plasma Sci. Technol.

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“…In order to obtain results of the initial dusty plasma probe diagnosis, the dusty plasma generator used by Ding [21] is adopted, as shown in figure 1. The experimental device can completely trap the dust particles in the curved part of the tube and thereby control the distribution of dust particles in the plasma.…”

Section: Dusty Plasma Generator and Parameter Selectionmentioning

confidence: 99%

Machine learning combined with Langmuir probe measurements for diagnosis of dusty plasma of a positive column

Ding

Yao

Wang

et al. 2021

Plasma Sci. Technol.

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This paper reports the use of machine learning to enhance the diagnosis of a dusty plasma. Dust in a plasma has a large impact on the properties of the plasma. According to a probe diagnostic experiment on a dust-free plasma combined with machine learning, an experiment on a dusty plasma is designed and carried out. Using a specific experimental device, dusty plasma with a stable and controllable dust particle density is generated. A Langmuir probe is used to measure the electron density and electron temperature under different pressures, discharge currents, and dust particle densities. The diagnostic result is processed through a machine learning algorithm, and the error of the predicted results under different pressures and discharge currents is analyzed, from which the law of the machine learning results changing with the pressure and discharge current is obtained. Finally, the results are compared with theoretical simulations to further analyze the properties of the electron density and temperature of the dusty plasma.

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Ambipolar Trap for Dust Particles in a V-Shaped Homogeneous Positive Column of Glow Discharge at Low and Medium Pressures

Ding

Yuan

Zhou

et al. 2021

IEEE Trans. Plasma Sci.

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The Influence of the Ambipolar Field on the Levitation Conditions of Dust Particles in the Positive Column of the Glow Discharge With a Change the Spatial Orientation of the Discharge Tube

Cited by 4 publications

References 7 publications

Simulation of DC glow discharge plasma with free-moving dust particles in the radial direction

Simulation of DC glow discharge plasma with free-moving dust particles in the radial direction

Machine learning combined with Langmuir probe measurements for diagnosis of dusty plasma of a positive column

Ambipolar Trap for Dust Particles in a V-Shaped Homogeneous Positive Column of Glow Discharge at Low and Medium Pressures

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