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Title: Characteristics of a Direct Current-driven plasma jet operated in open air

A DC-driven plasma jet has been developed to generate a diffuse plasma plume by blowing argon into the ambient air. The plasma plume, showing a cup shape with a diameter of several centimeters at a higher voltage, is a pulsed discharge despite a DC voltage is applied. The pulse frequency is investigated as a function of the voltage under different gap widths and gas flow rates. Results show that plasma bullets propagate from the hollow needle to the plate electrode by spatially resolved measurement. A supposition about non-electroneutral trail of the streamer is proposed to interpret these experimental phenomena.
Authors:
;  [1] ;  [2] ; ;  [1]
  1. College of Physics Science and Technology, Hebei University, Baoding 071002 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22217950
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 14; Other Information: (c) 2013 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; 36 MATERIALS SCIENCE; AIR; ARGON; DIFFUSION; DIRECT CURRENT; ELECTRIC POTENTIAL; ELECTRODES; FUNCTIONS; GAS FLOW; GLOW DISCHARGES; PLASMA JETS; PLATES; PLUMES; PULSES; SHAPE; SPARK GAPS