Study of Single Filament Dielectric Barrier Discharge in Argon

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Dielectric barrier discharges are devices, which were first invented to generate ozone. Today, they have a lot of applications such as surface modification, plasma-enhanced chemical vapor deposition, excitation of CO2 lasers and excimer lamps, plasma display panels, pollution control, as well as gas and air cleaning. At atmospheric pressure DBDs are typically filamentary, comprising a number of individual breakdown channels (micro discharges) with very short time duration of several nanoseconds. Most of the chemical effects of filamentary DBDs take place in their micro discharges. Due to that, this work focusses on the study of micro discharges at low temperature and atmospheric pressure conditions in argon to investigate its creation process. Therefore, a symmetric needle-to-needle geometry was designed, where both electrodes are covered by dielectric. A 2D simulation in COMSOL Multiphysics is presented to show the characteristics of the micro discharge. The overall discharge behavior can be validated by electrical measurements and optical emission spectroscopy, thus allowing to compare mean electron densities and energies.
Original languageEnglish
Article numberLW1.00018
JournalBulletin of the American Physical Society
Volume2018
Number of pages1
ISSN0003-0503
Publication statusPublished - 2018
Event71st Annual Gaseous Electronics Conference - Oregon Convention Center in downtown, Portland, United States
Duration: 05.11.201809.11.2018
Conference number: 71
http://apsgec.org/gec2018/

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