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Author Jacobs, Stewart V. ♦ Xu, Kunning G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ AIR ♦ AUGMENTATION ♦ CATHODES ♦ DENSITY ♦ ELECTRIC FIELDS ♦ ELECTRIC POTENTIAL ♦ FLAMES ♦ ION DENSITY ♦ ION SOURCES ♦ IONS ♦ LANGMUIR PROBE ♦ METHANE ♦ PLASMA SHEATH ♦ THICKNESS
Abstract The effect of the ionic wind on a premixed methane-air flame under a DC electric field is studied via mapping of the ion density with Langmuir probes. Ion densities were observed to increase near the burner with increasing electrode voltage up to 6 kV. Past this electrode supply voltage, ion densities ceased increasing and began to decline in some locations within the premixed flame. The increased ion density is caused by an increase in ionic wind force and cathode sheath thickness. The plateau in density is due to the cathode sheath fully encompassing the flame front which is the ion source, thereby collecting all ions in the flame. The spatial density data support the ionic wind hypothesis and provide further explanation of its limits based on the plasma sheath.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-04-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 4


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