Study on radiation of micro-gap dielectric barrier discharge plasma at atmospheric pressure

The radiation of micro-gap dielectric barrier discharge (DBD) plasma is studied at atmospheric pressure in a device with a transparent electrode and observation-side section.It is found that the applied voltage, applied frequency and the configuration of DBD have an effect on its radiation properties. The electrical field strength and power density in the discharge gap of DBD have been improved using a narrow discharge gap, thinner dielectric layer and high-frequency high-voltage power supply in this micro-gap DBD at atmospheric pressure, and the properties of the DBD device have been enhanced.