Mass Spectrometric Observations of the Ionic Species in a Double Dielectric Barrier Discharge Operating in Nitrogen
| Autor: | James W. Bradley, David Sawtell, Peter Kelly, Zaenab Abd-Allah, G.T. West |
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| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Polymers and Plastics 010401 analytical chemistry Analytical chemistry chemistry.chemical_element Ionic bonding Dielectric barrier discharge Dielectric Nonthermal plasma Condensed Matter Physics 01 natural sciences Nitrogen 0104 chemical sciences Ion chemistry 0103 physical sciences Carbon Water vapor |
| Zdroj: | Plasma Processes and Polymers. 13:649-653 |
| ISSN: | 1612-8850 |
| DOI: | 10.1002/ppap.201500149 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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