Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3628455
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Funding
- UK EPSRC [EP/H003797/1]
- Iraqi Ministry of Higher Education and Scientific Research
- EPSRC [EP/H003797/1, EP/I500987/1, EP/H003797/2] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H003797/2, EP/H003797/1, EP/I500987/1] Funding Source: researchfish
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The excitation dynamics within the main plasma production region and the plasma jets of a kHz atmospheric pressure dielectric barrier discharge (DBD) jet operated in helium was investigated. Within the dielectric tube, the plasma ignites as a streamer-type discharge. Plasma jets are emitted from both the powered and grounded electrode end; their dynamics are compared and contrasted. Ignition of these jets are quite different; the jet emitted from the powered electrode is ignited with a slight time delay to plasma ignition inside the dielectric tube, while breakdown of the jet at the grounded electrode end is from charging of the dielectric and is therefore dependent on plasma production and transport within the dielectric tube. Present streamer theories can explain these dynamics. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628455]
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