Possibilities of Amplifying the Electromagnetic Field at the Poles of the Microwave Discharge Initiator to form Discharges with a Developed Streamer Structure

Various electrodynamic models of a combustion chamber are discussed, in which an initiated subcritical streamer discharge is used to ignite the combustible mixture. To localize the discharge in the working chamber, initiators based in half-wave electromagnetic vibrators with resonant properties are used. Based on numerical calculations, the dependences of the structure of the electric fields forming the discharge on the geometric parameters of the discharge initiator were obtained, and the issues of matching the dimensions of the chamber with the radiation generator were considered. The ways of increasing the resulting electromagnetic field in the region of the vibrator for the formation of a discharge with a bulk structure are determined.