Study on the Mutual Repulsion/Attraction Characteristics Within an Atmospheric‐Pressure Pulsed Radio Frequency Plasma Jet Array

ABSTRACT The present study investigates the interaction (repulsion/attraction) characteristics of atmospheric‐pressure radio frequency (RF) plasma jet arrays using two (DBD and bare‐electrode) types of discharge devices. It was found that bare‐electrode plasma jets exhibit attractive behavior, whereas DBD plasma jets initially repel, then attract, and finally repel again. Experimental and simulation results indicate that the bare‐electrode plasma jets experience a strong Lorentz force (attraction force). However, for the DBD plasma jets, the Coulomb force (repulsive force) initially exceeds the Lorentz force (attractive force); subsequently, the Lorentz force becomes dominant; ultimately, the Coulomb force regains dominance. The present study reveals the underlying mechanisms of interactions within atmospheric‐pressure pulsed RF plasma jet array, providing a guidance for controlling its uniformity.