Drift model of the cathode region of a glow discharge
- Russian Academy of Sciences, Institute of High-Current Electronics, Siberian Division (Russian Federation)
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.
- OSTI ID:
- 21080667
- Journal Information:
- Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 11 Vol. 32; ISSN PPHREM; ISSN 1063-780X
- Country of Publication:
- United States
- Language:
- English
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