Impact of N2O admixture on the characteristics of pulsed dielectric barrier discharges in N2 at atmospheric pressure
Impact of N2O admixture on the characteristics of pulsed dielectric barrier discharges in N2 at atmospheric pressure
复制标题
N2O 混合物对常压 N2 中脉冲介质阻挡放电特性的影响
DOI:
10.1088/1361-6463/ab4944
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Brandenburg R
中科院分区:
文献类型:
--
作者:
Höft H;Kettlitz M;Becker MM;Brandenburg R
The impact of N 2 O admixtures on the inception and development of pulsed dielectric barrier discharges (DBDs) in N 2 at atmospheric pressure is studied using optical and electrical diagnostics supported by 0D modelling of the reaction kinetics. The N 2 O concentration in the N 2–N 2 O gas mixture was varied between virtually pure N 2 and 10 vol% N 2 O. A significant impact of N 2 O on the discharge characteristics was found for concentrations above 1000 ppm. In particular, a decrease of the transferred charge, and discharge energy and an increase of breakdown voltage, maximal discharge current, discharge emission diameter and velocity of the cathode-directed ionisation front (positive streamer) were observed. Additionally, a strong increase of breakdown voltage and discharge inception jitter accompanied by a decrease of the emission duration was found for N 2 O concentrations above 1 vol%. The modelling results indicate that for N 2 O concentrations in this range a transition from an electropositive to an electronegative regime takes place.
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