Generation of atmospheric pressure plasma using two chambers

Summary form only given, as follows. It has been shown that UV irradiation in an air discharge at atmospheric pressure results in an improvement in the uniformity of the discharge. We have used a dual chamber device to generate plasma in air at atmospheric pressure. A single power supply at 3 kHz is used to excite a discharge in both chambers. A low-pressure chamber is used to generate UV, which is coupled to the high-pressure region through a quartz dielectric. The UV from low-pressure region improves the atmospheric pressure discharge characteristics. Results of CCD camera pictures will be presented and compared with a dielectric-barrier discharge. Power and current measurements will be presented. The results show that a dual pressure discharge is capable of generating uniform plasma at atmospheric pressure and performs better than a dielectric-barrier discharge.