The discharge characteristics of the atmospheric-pressure plasma jets, generated by a capillary dielectric-barrier-discharge configuration with helium/neon gas flowing through and issuing out into the ambient air in different electric fields, have been investigated by an electron-multiplying CCD. We have compared plasma jets propagating in three configurations: 1) only one unipolar power electrode surrounding the capillary; 2) a ground copper grid placed on the pathway of the jet; and 3) two parallel copper grids placed perpendicular to the jet. Comparing results show that plasma jets can be elongated by elevating external electric field in front of the jets.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Condensed Matter Physics