Abstrakt
In our contribution, the positive column of oxygen DC glow discharge is investigated using methods of computational physics at medium pressures (200-687 Pa) and discharge currents from 20 to 40 mA. Under mentioned conditions, the attributes of the DC oxygen discharge are particular, what is based on the existence of two forms: H-form and T-form.
One-dimensional fluid model of the stable H-form has been developed. Not only radial profiles of various species in cylindrical tube but also the reaction among them and their interaction with the walls are taken into account.
The model is built on the continuous description of concentration of species and drift-diffusion approximation of the particle flux. The results of the simulation are in good agreement with experimental ones.