Characteristics of Nanosecond Pulsed Discharges in Atmospheric Helium Microplasmassupported by the Natural Sciences and Engineering Research Council of Canada (NSERC) - Discovery Grant (No. 342369)

Microplasmas are very interesting due to their unique properties and achievable regimes maintained at atmospheric pressures. Due to the small scales, numerical modeling could contribute to the understanding of underlying phenomena as it provides access to local parameters-and complements experimenta...

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Bibliographic Details
Published in:Plasma science & technology 2016-10, Vol.18 (10), p.992-997
Main Author: Jugroot, Manish
Format: Article
Language:English
Subjects:
Joule heating
microplasmas
nanosecond discharges
self-consistent simulations
space charge
Online Access:Get full text
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Summary:Microplasmas are very interesting due to their unique properties and achievable regimes maintained at atmospheric pressures. Due to the small scales, numerical modeling could contribute to the understanding of underlying phenomena as it provides access to local parameters-and complements experimental global characteristics. A self-consistent formalism, applied to nanosecond pulsed atmospheric non-equilibrium helium plasmas, reveals that several successive discharges can persist as a result of a combined volume and dielectric surface effects. The valuable insights provided by the spatiotemporal simulation results show the critical importance of coupled gas and plasma dynamics-namely gas heating and electric field reversals.
ISSN:1009-0630
DOI:10.1088/1009-0630/18/10/05