Investigations of Electrical Discharge for Nitrogen (N2) and Hydrogen (H2) Gases

The characteristics of the glow discharge, has been studied of nitrogen and hydrogen gases, at different gas pressures and discharge current. The discharge cell consists of two movable parallel cupper electrodes of 5 cm diameter and gap distance of 3 cm between the two electrodes enclosed in Pyrex glass tube of 7.5 cm diameter. The I-V curve of discharge and V-Pd curve (Paschen’s law) of glow discharge were measured. The first (η) and secondary ionization coefficients were calculated. The electron temperature (Te) and the ion density (Ni) were estimated by using double probes method at different pressures and discharge currents. The plasma frequency and Debye shielding were also calculated.Keywords: DC Plasma, gas discharge, electrical discharge, plasma diagnostic