Abstract
The drift–diffusion model of a Penning discharge in molecular hydrogen under pressures of about 1 Torr with regard to the external electric circuit has been proposed. A two-dimensional axially symmetric discharge geometry with a cylindrical anode and flat cathodes perpendicular to the symmetry axis has been investigated. An external magnetic field of about 0.1 T is applied in the axial direction. Using the developed drift–diffusion model, the electrodynamic structure of a Penning discharge in the pressure range of 0.5–5 Torr at a current source voltage of 200–500 V is numerically simulated. The evolution of the discharge electrodynamic structure upon pressure variations in zero magnetic field (the classical glow discharge mode) and in the axial magnetic field (Penning discharge) has been studied using numerical experiments. The theoretical predictions of the existence of an averaged electron and ion motion in a Penning discharge both in the axial and radial directions and in the azimuthal direction have been confirmed by the calculations.
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Original Russian Text © S.T. Surzhikov, 2017, published in Zhurnal Tekhnicheskoi Fiziki, 2017, Vol. 87, No. 8, pp. 1165–1176.
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Surzhikov, S.T. Two-dimensional model of the Penning discharge in a cylindrical chamber with the axial magnetic field. Tech. Phys. 62, 1177–1188 (2017). https://doi.org/10.1134/S1063784217080278
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DOI: https://doi.org/10.1134/S1063784217080278