Abstract
A one-dimensional drift model of the cathode region of a glow discharge with allowance for both electron-impact ionization and charged particle loss is proposed. An exact solution to the model equations is obtained for the case of similar power-law dependences of the ion and electron drift velocities on the electric field strength. It is shown that, even in the drift approximation, a relatively wide transition layer in which the ion-to-electron current ratio approaches a constant value typical of the positive column of a glow discharge should occur between the thin space-charge sheath and the quasineutral plasma, the voltage drop across the space-charge sheath being comparable to that across the transition layer. The calculated parameters of the normal and anomalous glow discharges are in good agreement with available experimental data.
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Original Russian Text © V.Yu. Kozhevnikov, A.V. Kozyrev, Yu.D. Korolev, 2006, published in Fizika Plazmy, 2006, Vol. 32, No. 11, pp. 1027–1038.
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Kozhevnikov, V.Y., Kozyrev, A.V. & Korolev, Y.D. Drift model of the cathode region of a glow discharge. Plasma Phys. Rep. 32, 949–959 (2006). https://doi.org/10.1134/S1063780X06110109
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DOI: https://doi.org/10.1134/S1063780X06110109