Mass Spectrometric Observations of the Ionic Species in a Double Dielectric Barrier Discharge Operating in Nitrogen
Mass Spectrometric Observations of the Ionic Species in a Double Dielectric Barrier Discharge Operating in Nitrogen
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DOI：
10.1002/ppap.201500149
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发表时间：
2016-06
影响因子：
3.5
通讯作者：
Zaenab Abd-Allah;D. Sawtell;G. West;P. Kelly;J. Bradley
中科院分区：
文献类型：
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作者：
Zaenab Abd-Allah;D. Sawtell;G. West;P. Kelly;J. Bradley
Weinheim负离子和正离子产生在一个大气压的DBD与双放电被确定和其相对强度的特点与水蒸气浓度的变化，在放电，气体停留时间，和电极间的间距。最丰富的负离子是O−、OH−、CN−、CNO−、NO−2H2O和NO−2，而正离子主要是N+、CH+2、N+2、CO+、HCO+、N2H+、O2+、H+（H2O）n、CNO+和CN2O+。随着放电中水浓度的增加，H+（H2O）n、CNO+及其水合团簇的强度增加，而所有含碳物种的强度均下降。增加物种在等离子体区域的停留时间，O−、OH−和NO−2的浓度降低，而NO−3的浓度增加。改变电极间距对放电中离子物种的形成没有任何影响。
WeinheimNegative and positive ions generated in an atmospheric-pressure DBD with double dielectrics were identified and their relative intensities characterized with variation of water vapor concentration in the discharge, gas residence time, and inter-electrode spacing. The most abundant negative ions were O−, OH−, CN−, CNO−, NO−2H2O, and NO−2 while the positive ions were dominated by N+, CH+2, N+2, CO+, HCO+, N2H+, O2+, H+(H2O)n, CNO+, and CN2O+. Increasing the water concentration in the discharge led to an increase in the intensity of H+(H2O)n, CNO+, and its hydrated clusters, while the intensity of all carbon containing species decreased. Increasing the residence time of the species in the plasma region decreased the concentration of O−, OH−, and NO−2, while the concentration of NO−3 increased. Changing the inter-electrodes spacing did not have any effect on the formation of ionic species in the discharge.