What is Cold Plasma?
Plasma is the fourth state of matter and is defined as an ionized gas that contains electrons and ions. The presence of these charges leads to several more important properties of plasma that distinguish it from an ordinary gas phase. As naturally, plasma can be observed in the northern lights and also lightning. For generating artificial plasma, a strong electric or electromagnetic field applied to a gaseous mixture with variables operating parameters such as electrodes, gas composition, power.
Plasma Regimes
The generation of cold plasma is usually performed by the application of a voltage between a high-voltage electrode and ground electrode under a gaseous mixture. According to voltage and current intensity, three main plasma regimes are identified: dark, glow, and arc discharge as shown in the graph in the following.
Examples of different types of electrical discharges
Multipin Corona Discharge (MCD)
Self Pulsed Discharge (SPD)
