Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium–air plasma jet
| Autor: | Zhen-dong Wang, Xiao-Chang Chen, Dezhen Wang, Muyang Qian, Cong-Ying Yang, Sanqiu Liu |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Atmospheric pressure Radical Plasma jet Analytical chemistry Pulsed DC General Physics and Astronomy chemistry.chemical_element 01 natural sciences 010305 fluids & plasmas Reaction rate chemistry 0103 physical sciences Atomic physics Water content Helium Voltage |
| Zdroj: | Chinese Physics B. 25:015202 |
| ISSN: | 1674-1056 |
| Popis: | A numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium–air plasma jet is presented. The generation and loss mechanisms of the OH radicals in a positive half-cycle of the applied voltage are studied and discussed. It is found that the peak OH density increases with water content in air (varying from 0% to 1%) and reaches 6.3×1018 m−3 when the water content is 1%. Besides, as the water content increases from 0.01% to 1%, the space-averaged reaction rate of three-body recombination increases dramatically and is comparable to those of main OH generation reactions. |
| Databáze: | OpenAIRE |
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