Effect of air flow on the micro-discharge dynamics in an array of integrated coaxial microhollow dielectric barrier discharges

摘要: The micro-discharge properties and evolution in a 2D array of integrated coaxial microhollow dielectric barrier discharges are studied by using highly time-resolved electrical optical diagnostics. study is focused on the effect gas flow rate residence time discharge properties. investigated geometry allows operating at exceptionally small times, which can be equal to or even smaller than period, reasonable rates. has an impact heating, residual humidity, pre-ionization density densities excited reactive species produced previous discharges. A unique voltage–charge plot obtained with elongated periods without activity. very significant NO emission observed that relates production these micro-discharges. Using intensities molecular bands second positive system nitrogen first negative ion, effective reduced electric field strengths maximum 870 Td. decreases increasing rate. This behavior consistent reduction overall intensity due amount charges present gap. Both water impurity changing ion mobility responsible for different distributions highest no conditions.