International Journal of Scientific Research and Management (IJSRM) ||Volume||11||Issue||04||Pages||M-2023-437-442||2023|| Website: www.ijsrm.in ISSN (e): 2321-3418 DOI: 10.18535/ijsrm/v11i04.m01 Asep Yoyo Wardaya, IJSRM Volume 11 Issue 04 April 2023 [www.ijsrm.in] M-2023-437 Modified Capacitance Model In The Corona Plasma Discharge. Asep Yoyo Wardaya 1) , Zaenul Muhlisin 1) , Isnain Gunadi 1) 1 Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Semarang Indonesia Abstract This research calculates the modified capacitance of the electrode capacitively coupled plasma ( CCP) model with a crown sharp-plane configuration. The CCP model is an electrode model similar to the principle of a capacitor in a conventional circuit but differs in the arrangement of the electrodes. In the case of a positive corona, the structure of the positions of the active electrodes is almost vertical in the air, and the part of the passive electrodes is lying horizontally under the active electrodes. The shape of the active electrode is sharp at the tip of the electrode, which will cause a high potential gradient in that area, resulting in a more significant plasma discharge in the pointed area than in the less sharp area. A current multiplier factor k is entered in the tapered region of calculating the capacitance model (modified capacitance) to anticipate the difference in the plasma flow. The modified capacitance model for calculating the corona discharge's current-voltage (I-V) characteristics has proven that geometric calculations of the electrodes can also be carried out without using a physical calculation model (Maxwell's equations). Keywords : CCP, Corona discharge, crown sharp-plane configuration, current multiplier factor k, (I-V) characteristics 1. Introduction. Plasma discharge-based electronic equipment technology has attracted much attention from the public and industry because it has several advantages that conventional electronic equipment does not have. One of these plasma equipment technologies is called capacitively coupled plasma (CCP) (Saikia et al., 2018), which has an electrode configuration like a capacitor in conventional electronic circuits. Usually, the CCP model is composed of two electrodes in a mutually perpendicular position. In the case of a positive dc corona plasma discharge, the active electrode is in a vertical position. The lower end of the electrode has a sharp surface, and the passive electrode has a large enough surface area in a horizontal place below the active electrode (van Veldhuizen and Rutgers, 2001). This CCP equipment can produce a corona plasma discharge if the dc or ac voltage difference is applied between the two electrodes. Corona discharge events are characterized by a substantial electric current compared to conventional electric currents. This difference is caused in the case of corona discharge; there are various physical events such as convective heat transfer (Robinson, 1970), electric wind (Robinson, 1962), electrostatic precipitation (Bush et al., 1979), etc. Most corona discharge events will emerge from the surface of the active electrode geometry, which is sharp towards the passive electrode below it because the surface of the pointed geometry will have a high potential gradient (van Veldhuizen and Rutgers, 2001). Several journals have discussed the shape of the current-voltage (I-V) characteristics of various electrode/capacitor configuration models such as cylinder-wire-plate configuration (Dumitran et al., 2007), sub-millimeter electrode gap configuration (Tirumala et al., 2011), needle-to-plate configuration (Kanazawa et al., 2002), and the electro-hydrodynamics (EHD) model (Guan et al., 2018).