Acta Physica Hungarica

, Volume 72, Issue 1, pp 71–88 | Cite as

Equation for cathodic glow sheath

  • S. Holló
  • B. Nyíri


The classical one dimensional approach of cathodic glow discharge is extended into a two dimensional time dependent model. A radial ion transport equation is derived on the basis of the space charge balance. Axial effects are accounted for in a nonlinear source term. It is shown that the radial transport of the ions caused by the radial electric field can be described as a diffusion process with a cathode fall dependent diffusion coefficient. The effect of the motion of sheath boundary and the displacement current are also incorporated.

The model exhibits all of the well-known macroscopic phenomena of glow discharges: subnormal, normal, anomal glow behaviour; pressure dependence of voltage current characteristics; (nearly) piecewise constant current density distributions; the effect of absorbing or reflecting walls; stability limits; subnormal glow oscillations; the lateral spread of glow discharge.


Glow Discharge Cathode Surface Current Density Distribution Radial Electric Field Radial Transport 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Akadémiai Kiadó 1992

Authors and Affiliations

  • S. Holló
    • 1
  • B. Nyíri
    • 1
  1. 1.Light Source Development DepartmentTUNGSRAM LtdBudapestHungary

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