Abstract
The experimental results on the influence of an external nonuniform magnetic field on the dust structure dynamics in a stratified glow discharge of helium are presented. The rotation of the dust structure at different values of magnetic field induction was investigated, where magnetic field varied up to 0.2 T. It was found that previously reported effect of the inversion of the rotation direction of a dust structure in an axial uniform magnetic field is strongly hindered by a radial component of the magnetic field induction in the case of a nonuniform magnetic field. This can be explained by the impact of the Lorentz force component appearing due to the axial component of the electric field and radial component of the magnetic field.
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ACKNOWLEDGMENTS
Assan R. Abdirakhmanov thanks hospitality of Saint-Petersburg State University during a two-month scientific internship in the laboratory of Dr. V.Yu. Karasev and, particularly, the coordinator of the faculty of physics for international academic mobility Elena Serova.
Funding
The experiment with superconducting cryomagnet was supported by RSF no. 18-72-10 019. Theoretical part of the work was supported by the Ministry of Education and Science of the Republic of Kazakhstan under grant AP08855651.
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APPENDIX
APPENDIX
FEMM software was used to obtain information about the magnetic field distribution by inputting electromagnet data (Fig. 4).
The simulation results show that the magnetic field is uniformly distributed in the central areas of the electromagnet. But closer to the end of the electromagnet the magnetic field lines bend, resulting in a radial component to the magnetic field.
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Abdirakhmanov, A.R., Karasev, V.Y., Dzlieva, E.S. et al. Rotation of a Dust Structure in Strong Nonuniform Magnetic Field. High Temp 60 (Suppl 2), S153–S158 (2022). https://doi.org/10.1134/S0018151X21040015
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DOI: https://doi.org/10.1134/S0018151X21040015