Dependence of inter-electrode gap separation on the Positive and Negative Pin-Grid Plasma Corona Discharge

  • Pirzheen O. Abdullah Department of Physics, University of Duhok, Duhok, Kurdistan Region of Iraq
  • Sabah I. Wais Department of Physics, University of Duhok, Duhok, Kurdistan Region of Iraq


In this work, both positive and negative corona discharge of pin-grid geometrical configuration was studied and the necessary modification of the general law of corona discharge was proposed. The current-voltage measurements were performed at room temperature and at different inter electrode separations. The variation of dimensional constant K and corona inception voltage Vo with pin-grid separations S were subjected into the general law of corona discharge using the least square fitting method in Log-Log scale. The relationship between corona current and different voltage (V-Vo) was investigated to find the acceptable value of exponent n. The least square fitting for all variations of corona parameters was based on the highest R-square value of obtained straight lines for individual measurements. It was found that value of exponent n for both polarities is larger compared to the empirical formula proposed previously for the general law of corona discharge.


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How to Cite
ABDULLAH, Pirzheen O.; WAIS, Sabah I.. Dependence of inter-electrode gap separation on the Positive and Negative Pin-Grid Plasma Corona Discharge. Academic Journal of Nawroz University, [S.l.], v. 9, n. 3, p. 27-34, june 2020. ISSN 2520-789X. Available at: <>. Date accessed: 12 july 2020. doi: