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Numerical Simulation of the Electron Beam Source at GDT Device

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Abstract

The results of numerical simulation of electron beam formation in inhomogeneous magnetic field under conditions of irradiation of its source by the plasma containing a supersonic deuteron flux are presented. To simulate the emission of ions from the plasma, the boundary conditions obtained by solving the one-dimensional Poisson equation in the Debye layer on the plasma surface are used. The angular characteristics of the beam are obtained, and the conditions for its passage through a magnetic mirror with large mirror ratio into GDT open magnetic trap are found. The negative influence of the potential of the liner blocking the plasma flow at the entrance of the beam source leading to increase in the angular divergence of its electrons, is shown.

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ACKNOWLEDGMENTS

Authors are sincerely grateful to P.A. Bagryansky and D.I. Skovorodin for useful consultations and fruitful discussions.

Funding

This work was supported by the Ministry of Higher Education and Science of the Russian Federation.

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Authors and Affiliations

  1. Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    V. T. Astrelin & E. I. Soldatkina

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  1. V. T. Astrelin
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  2. E. I. Soldatkina
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Correspondence to V. T. Astrelin or E. I. Soldatkina.

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Astrelin, V.T., Soldatkina, E.I. Numerical Simulation of the Electron Beam Source at GDT Device. Plasma Phys. Rep. 48, 1–9 (2022). https://doi.org/10.1134/S1063780X22010020

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  • DOI: https://doi.org/10.1134/S1063780X22010020

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