Factors affecting the glow-to-arc transition at the cathode of an electric discharge at atmospheric pressure

Study of a direct current atmospheric pressure glow discharge in helium with wet aerosol sample introduction systems

“…In APGDs a negative dynamic resistance is found. 5,7,17,18 The current indeed increases at decreasing voltage in the glow discharge at atmospheric pressure. In contrast to the literature 7,18 in our setup no change from a negative dynamic resistance to a positive one was observed.…”

Assessment of Possible Application of an Atmospheric Pressure Plasma Jet for Shelf Life Extension of Fresh-Cut Salad

“…In fact, the limited penetration depth of the reactive plasma species enables an effective superficial chemical action, without affecting the nutrients and the quality of the treated food [ 10 ]. However, a basic requirement is to avoid plasma instability such as the glow-to-arc transition [ 11 ]. In fact, local arc formation leads to safety problems as well as commercially unacceptable damages of the plasma-treated food.…”

Modeling of the effect of a dielectric film on the electrode surface upon the discharge glow-to-arc transition

“…After volt age is applied to the electrodes, the glow discharge is first ignited in them; the drop in cathode voltage is 100-200 V, and the main mechanism of electron emission from the cathode necessary to maintain the discharge is the ion electron emission [4,5]. Due to cathode heating by the heat flow from the discharge cathode sheath [6,7], its temperature eventually reaches values at which thermal electron emission occurs, and the discharge is transformed into an arc [8,9], with the cathode voltage drop 10-20 V [4]. Thus, one way of improving such devices is a reduction of the time interval before ignition of the arc discharge in them.…”