The gas discharge dusty plasma in a uniform magnetic field

Abdirakhmanov, A. R.; Dosbolayev, M. K.; Рамазанов, Т. С.

doi:10.1063/1.5020395

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Therefore, we expect the magnetic field of moderate diapason to be an effective external factor due to its influence on electrons. In the majority of known experiments with dusty plasmas, where magnetic field lies in moderate diapason, the effect on dusty grains is indirect and caused by the electronic and ionic flows. Therefore, to control dusty plasmas by magnetic field, it will be productive to increase it until just before the decrease of electron gyro radius to the dust particle size.…”

Section: Introductionmentioning

confidence: 99%

Dusty plasma in the stratified glow discharge in moderate magnetic field

Pavlov

Дзлиева

Novikov

et al. 2019

Contributions to Plasma Physics

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This article presents the experimental study of dust structures formed in striations of glow discharge in an external magnetic field of up to 104 G, which was created using a cryomagnet. A magnetic field classification based on probe theory is described. In moderate magnetic field, we obtained stable dust structures. The corresponding experimental setup and the experiment itself are described in detail. Special attention was paid to the influence of magnetic field on the change of the diameter and inter‐particle distance of dusty cloud. And, we also determined the dependence of angular velocity of dust rotation on magnetic induction.

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Section: Introductionmentioning

confidence: 99%

Dusty plasma in the stratified glow discharge in moderate magnetic field

Pavlov

Дзлиева

Novikov

et al. 2019

Contributions to Plasma Physics

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Three-dimensional dusty plasma in a strong magnetic field: Observation of rotating dust tori

et al. 2020

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This paper reports on the dynamics of a 3-dimensional dusty plasma in a strong magnetic field. An electrostatic potential well created by a conducting or non-conducting ring in the rf discharge confines the charged dust particles. In the absence of the magnetic field, dust grains exhibit a thermal motion about their equilibrium position. As the magnetic field crosses a threshold value (B > 0.02 T), the edge particles start to rotate and form a vortex in the vertical plane. At the same time, the central region particles either exhibit thermal motion or E→×B→ motion in the horizontal plane. At B > 0.15 T, the central region dust grains start to rotate in the opposite direction resulting in a pair of counter-rotating vortices in the vertical plane. The characteristics of the vortex pair change with increasing the strength of the magnetic field (B ∼ 0.8 T). At B > 0.8 T, the dust grains exhibit very complex motion in the rotating torus. The angular frequency variation of rotating particles indicates a differential or sheared dust rotation in a vortex. The angular frequency increases with increasing the magnetic field from 0.05 T to 0.8 T. The ion drag force and dust charge gradient along with the E-field are considered as possible energy sources for driving the edge vortex flow and central region vortex motion, respectively. The directions of rotation also confirm the different energy sources responsible for the vortex motion.

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Creation of dust structures and clusters in a glow discharge in a strong magnetic field

Karasev

Дзлиева

Pavlov

et al. 2019

J. Phys.: Conf. Ser.

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During the last 5 years, the range of magnetic field applied in the studies of dusty plasmas extended to the strong field. In particular, it became possible to generate dusty plasma in a glow discharge in a standing striation in a field of 1 T. Features of the formation of dusty plasma in a strong magnetic field, such as its geometric shape, the size of the dust structure and its stability are discussed in this report. Additionaly, the dust component is used for the diagnosis of the glow discharge, because it reflects the geometric size of the dust trap. Experiments showed the tendency of the generated dust clouds to compress in the direction perpendicular to the magnetic field and lengthen along the magnetic field.

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The gas discharge dusty plasma in a uniform magnetic field

Cited by 4 publications

References 7 publications

Dusty plasma in the stratified glow discharge in moderate magnetic field

Dusty plasma in the stratified glow discharge in moderate magnetic field

Three-dimensional dusty plasma in a strong magnetic field: Observation of rotating dust tori

Creation of dust structures and clusters in a glow discharge in a strong magnetic field

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