INVESTIGATION OF THE PROPERTIES OF MICROPARTICLES IN THE GLOW DISCHARGE STRATUM IN A CROSSED ELECTRIC AND MAGNETIC FIELD
https://doi.org/10.55452/1998-6688-2023-20-1-38-44
Abstract
In this work, the behavior of charged micron-sized particles in the DC glow discharge stratum at low pressure in a crossed magnetic and electric field was experimentally studied. The experiment was conducted in a vertically oriented gas-discharge glass tube. A homogeneous magnetic field was created using a two-section Helmholtz coil. The results showed that the micron-sized dust particles move in the opposite direction to the ExB drift as the magnetic field induction increases. Once the induction reaches a specific threshold (B>10 mT), the dust particles start rotating and forming counter-rotating vortex pairs on the horizontal plane. Moreover, it was observed that the shape of the dust structures changes from a disk to an ellipsoid. The PIV (particle image velocimetry) method was employed to analyze the dust vortices' dynamic behavior, and the generation of the co-vortex rotation was explained through the dust particles' charge gradient, which was orthogonal to the ion drag force.
About the Authors
A. R. Abdirakhmanov
Al-Farabi Kazakh National University
Kazakhstan
Kazakhstan
Abdirakhmanov Assan Ramazanovich, Engineering Profile Laboratory
050040, Almaty
R. U. Masheyeva
Wigner Research Centre for Physics, Complex Fluid Research Department
Hungary
Hungary
H-1121, Budapest
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Review
For citations:
Abdirakhmanov A.R., Masheyeva R.U. INVESTIGATION OF THE PROPERTIES OF MICROPARTICLES IN THE GLOW DISCHARGE STRATUM IN A CROSSED ELECTRIC AND MAGNETIC FIELD. Herald of the Kazakh-British Technical University. 2023;20(1):38-44. https://doi.org/10.55452/1998-6688-2023-20-1-38-44
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