Title :
Flow and Discharge Development in an Argon Atmospheric Pressure Plasma Jet Observed by ICCD and PLIF Imaging
Author :
Iseni, Sylvain ; Reuter, Stephan ; Schmidt-Bleker, Ansgar ; Weltmann, Klaus-Dieter
Author_Institution :
Centre for Innovation Competence Plasmatis, Greifswald, Germany
Abstract :
In this paper, a megahertz atmospheric pressure plasma jet is investigated regarding its discharge pattern in correlation with the flow. Single-shot imaging shows plasma streamer development in a flow pattern determined by turbulent interaction with the atmosphere. Planar laser-induced fluorescence imaging on hydroxyl shows the flow pattern. The discharge pattern is streamer-like. Here, it can be observed that the streamer exhibits a hook-like structure at the end, which might also be attributed to the gas flow pattern.
Keywords :
argon; high-frequency discharges; pattern formation; plasma diagnostics; plasma flow; plasma jets; plasma turbulence; Ar; ICCD imaging; PLIF imaging; argon atmospheric pressure plasma jet; discharge pattern; gas flow pattern; hook-like structure; hydroxyl; megahertz atmospheric pressure plasma jet; planar laser-induced fluorescence imaging; plasma streamer; pressure 1 atm; turbulent interaction; Argon; Atmospheric measurements; Discharges (electric); Imaging; Measurement by laser beam; Plasmas; Streaming media; Atmospheric-pressure plasmas; measurement by laser beam; optical imaging; plasma diagnostics; plasma diagnostics.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2321226
