Diagnostics of Atmospheric Plasma Jets of Helium and Argon Barrier Discharge in a Cylindrical Microwave Cavity Resonator

Introduction. Technologies related to the use of low-temperature atmospheric plasmas are developing at a rapid pace. Creation new plasma sources for specific applications requires monitoring dynamic processes in such discharges with high time resolution. Electron concentration is one most important characteristics, which can be very low pressure plasma. However, methods currently available diagnostics gas-discharge either characterized by insufficient sensitivity or unable monitor non-stationary discharges. In this regard, development diagnostic approaches seems relevant research direction. Aim. To develop method an gas temperature and electron cylindrical microwave resonator. Materials methods. The proposed based on well-known principle measuring frequency shift Q-factor eigenmodes resonator, inside under study located. Results. Measurements barrier discharge jets helium argon stream resonator were performed. geometry made it possible significantly increase measurements. It became exclude effect polarization degeneracy round developed system was also tested test objects known value permittivity. Conclusion. A stationary cold transmitting receiving antennas installed, as well orthogonal thin conductor preventing excitation undesirable modes, developed.