Abstract
A numerical simulation is made of a cylindrical hollow cathode glow discharge in helium gas. Electrons are assumed to consist of two or three groups of different temperatures. Calculations are made for the following conditions: gas pressure of 0.24 kPa, cathode fall potential of 260 V and discharge current of 33 mA. Numerical results present number densities of electrons, ions and excited atoms of 64 excited levels as a function of the radial distance r. Experimentally determined population densities of excited atoms are also presented as a function of r. Agreement of calculation with experiment is good for densities at the center of the cathode. Calculated densities, however, have a larger peak near the edge of the negative glow than measured densities.
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