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Title: Electrical characteristics and formation mechanism of atmospheric pressure plasma jet

The behavior of atmospheric pressure plasma jet produced by a coplanar dielectric barrier discharge in helium in external electrostatic and magnetic field is investigated. Net negative charges in the plasma jet outside the tube were detected. The deflection of the plume in the external field was observed. The plasma jet is suggested to be formed by the electron beam from the temporal cathode which is accelerated by a longitudinal field induced by the surface charges on the dielectric tube or interface between the helium and ambient air. The helium flow is necessary for the jet formation in the surrounding air.
Authors:
; ; ; ;  [1]
  1. School of Physics, Beijing Institute of Technology, Beijing 100081 (China)
Publication Date:
OSTI Identifier:
22299935
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATMOSPHERIC PRESSURE; CATHODES; DIELECTRIC MATERIALS; DIFFUSION BARRIERS; ELECTRON BEAMS; HELIUM; INTERFACES; MAGNETIC FIELDS; PLASMA JETS; SURFACES