TY - JOUR ID - TI - DC Glow Discharge Plasma Characteristics in Ar/O2 Gas Mixture AU - Younus K. Jabur1 AU - Mohammed Gh. Hammed*1 AU - Mohammed K. Khalaf 2 PY - 2021 VL - 62 IS - 2 SP - 475 EP - 482 JO - Iraqi Journal of Science المجلة العراقية للعلوم SN - 00672904 23121637 AB - In this article, the effects of the O2 ratio on the electrical characteristics,including the I-V characteristic curve, Panchen’s curve, and I-P curve, were tested ina sample of O2/Ar gaseous mixture . The sample was produced by plasma-based DCmagnetron sputtering with niobium metal as a target material. The inter-electrodespacing value was 4 cm. Plasma diagnosis via the Optical Emission Spectroscopy(OES) method was used to achieve Te and Ne mixture values of 20 %, 30 %, 50%,and 70% in the Ar/O2 system. The results showed that the discharge is operating inthe abnormal glow region and the discharge current was decreased by increasing O2percentage. In addition, the experimental results showed that the discharge isoptimal at 30% gas ratio. It was found that the electron temperature was decreasedwith increasing working pressure and increased with increasing the O2 percentage,while electron density was increased with increasing both working gas pressure andO2 percentage.

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