High-speed photographs of a dielectric barrier atmospheric pressure plasma jet

TLDR

The study uses an intensified CCD camera to investigate the propagation of an atmospheric‑pressure plasma jet. ICCD imaging and surface‑interaction experiments reveal that the jet behaves like a plasma gun emitting discrete plasma bullets rather than a continuous flow. The jet is mainly an electrical phenomenon, not a flow‑related one, and consists of small plasma bullets rather than a voluminous plasma.

Abstract

The propagation of an atmospheric pressure plasma jet (APPJ) is investigated by use of an intensified charge coupled device (ICCD) camera. It is shown that the APPJ is mainly an electrical phenomenon and not a flow related one. The jet does not consist of a voluminous plasma. Much more, the presented plasma source acts like a "plasma gun" blowing small "plasma bullets" out of its mouth. Furthermore, the interaction of the jet with a surface has been investigated.