Spatio-temporal dynamics of electrons and helium metastables in uniform dielectric barrier discharges formed in He/N2
Niklas Nawrath,
Ihor Korolov,
Nikita Bibinov
et al.
Abstract:A uniform atmospheric pressure dielectric barrier discharge is operated in helium with an admixture (0.45%) of nitrogen. The discharge is ignited in the gas gap between a driven and a grounded electrode and propagates along the dielectric surface outside the gap. Plasma conditions are characterized with current and voltage measurements and by application of absolutely calibrated optical emission spectroscopy, with a focus on nitrogen molecular emission. Plasma parameters, namely electron density and reduced el… Show more
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