Abstract
Pinching plasma flows in an additional axial magnetic are an interesting phenomenon that has many applications in various fields of science and technology. The influence of the external axial magnetic field of 0.24 T on helium plasma flows generated by a plasma accelerator of a magnetoplasma compressor type has been studied. Measurements of the self-generated magnetic field were conducted using different magnetic probes inserted in the plasma flow outside the accelerating channel during the discharge. The data were obtained with and without an external axial magnetic field at different distances from the outlet of the accelerator, taking into account the axial symmetry of the plasma flow. Two-dimensional distributions of the electric current flowing outside the accelerating channel were plotted using the data from the magnetic probe measurements and analyzed. The external axial magnetic field leads to an increase in the magnitude of the self-generated magnetic field in plasma flows and, therefore, changes the spatial distribution of the electric current.
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Acknowledgements
This work has been performed within the Targeted Program of National Academy of Sciences of Ukraine on Plasma Physics \(\hbox {No P}9/24-2020\). “This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.” Work has been performed under EUROfusion WP EDU.
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Solyakov, D.G., Volkova, Y.Y., Ladygina, M.S. et al. Distributions of magnetic field and current in pinching plasma flows: effect of axial magnetic field. Eur. Phys. J. Plus 136, 566 (2021). https://doi.org/10.1140/epjp/s13360-021-01170-z
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DOI: https://doi.org/10.1140/epjp/s13360-021-01170-z