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Simulations of nanosecond-pulsed dielectric barrier discharges in atmospheric pressure air

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2 Author(s)
Soo Bak, Moon ; Mechanical Engineering Department, Stanford University, Stanford, California 94305, USA ; Cappelli, Mark A.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.4795269 

This paper describes simulations of nanosecond pulse plasma formation between planer electrodes covered by dielectric barriers in air at atmospheric pressure and 340 K. The plasma formation process starts as electrons detach from negative ions of molecular oxygen that are produced from the previous discharge pulse. An ionization front is found to form close to the positively biased electrode and then strengthens and propagates towards the grounded electrode with increasing gap voltage. Charge accumulation and secondary emission from the grounded electrode eventually lead to sheath collapse. One interesting feature is a predicted reversal in gap potential due to the accumulated charge, even when there is no reversal in applied potential. The simulation results are compared to recent measurement of mid-gap electric field under the same discharge conditions [Ito etal, Phys. Rev. Lett. 107, 065002 (2011)].

Published in:

Journal of Applied Physics  (Volume:113 ,  Issue: 11 )

Date of Publication:

Mar 2013

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