Sphere-to-Plane Electrodes Configuration of Positive and Negative Plasma Corona Discharge
American Journal of Modern Physics
Volume 2, Issue 2, March 2013, Pages: 46-52
Received: Feb. 3, 2013;
Published: Mar. 10, 2013
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Sabah I. Wais, Department of Physics, Faculty of Sciences, University of Duhok, Kurdistan Region, Iraq
Dunia D. Giliyana, Department of Physics, Faculty of Sciences, University of Duhok, Kurdistan Region, Iraq
An experimental investigation has been carried out with sphere-to-plane geometrical electrodes for pos-itive and negative corona discharge at atmospheric pressure and different inter-electrode separation. The experimental results have been compared particularly with those refer to point-to-plane and point-to-ring geometriesand a similar common feature has been provided. The current and voltage data was subjected to the relation of Townsend and Ferreira and showed one an upward curvature at low applied voltage (low field region) and then a linear behavior was found in high field region. This means that all acquired current-voltage data for both positive and negative coronas confirm Townsend relation at the inter-electrode distance used in this work. The extrapolated corona inception voltage was followed a non-linear tend with electrode gap distance S. The extrapolated potential Vo for positive corona was more sensitive on the distance S than that of negative corona. The dimensional constants A and K were found to be proportional inversely to the electrode gap distance by different power exponent. The ratios between the dimensional constants A and K for positive and negative corona approached a constant value at gap distance (S 2.5 cm).
Sabah I. Wais,
Dunia D. Giliyana,
Sphere-to-Plane Electrodes Configuration of Positive and Negative Plasma Corona Discharge, American Journal of Modern Physics.
Vol. 2, No. 2,
2013, pp. 46-52.
G. F. Leal Ferreira, O.N. Oliverira, Jr., and J. A. Giacometti, "Point-to-plane corona: Current-voltage characteristics for positive and negative polarity with evidence of an electronic component", J. Appl. Phys. Vol.59, No. 9, pp. 3045-3049, May 1986.
J. Chen, "Direct current corona-enhanced chemical reactions", Ph.D Thesis, University of Minnesota, USA, 2002.
B. L. Henson, " A space-charge region model for microscopic steady coronas from points", J. Appl. Phys., Vol. 52, pp. 709-715, 1981.
XiangboMeng, Hui Zhang and Jingxu (Jesse) Zhu, "A general empirical formula of current–voltage characteristics for point-to-plane geometry corona discharges", J. Phys. D: Appl. Phys. Vol. 41, pp. 065209 (10pp), 2008.
K. Yamada, "An empirical formula for negative corona discharge current in point-grid electrode geometry" J. Appl. Phys, Vol. 96, pp. 2472–5, 2004.
Pierluigi Giubbilini, "The current-voltage characteristics of point-to-plane corona", J. Appl. Phys., Vol. 64, No. 7, pp. 3730-3732, Oct. 1988.
G. R. Gumurthy, "Corona between points plane electrodes in air at atmospheric pressure", IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, pp. 305, 2003.
R. S. Sigmond, "Simple approximate treatment of unipolar space charge dominated coronas: The Warburg law and the saturation current", J. Appl. Phys., Vol. 53, pp. 891-898, 1982.
M. Abdel-Salam, A. Ahmed, and A. Nasr EL-deen, "Inception Voltage of Corona Discharge from Suspended, Grounded and Stressed Particles in Uniform-Field Gas-Insulated-Gaps at Varying Pressures", International Journal of Plasma Environmental Science & Technology, Vol.4, No.1, March 2010.