Coaxial Cerenkov type high-power microwave oscillator for collecting electrons based on outer waveguide wall

The invention discloses a coaxial Cerenkov type high-power microwave oscillator for collecting electrons based on an outer waveguide wall, which comprises an outer circular waveguide, a coil sleeved on the outer circular waveguide, an inner conductor, and a cathode, a cut-off neck, a slow wave structure, an extraction structure and a collector which are sequentially arranged from front to back, the end, with the smaller diameter, of the conical collection section is in butt joint with the extraction structure, the cathode, the cut-off neck, the slow wave structure, the extraction structure and the conical collection section of the collector are arranged on the inner side of the outer circular waveguide, and the inner conductor is arranged on the inner side of the slow wave structure, the inner side of the extraction structure and the inner side of the collector. The method has the advantages that the length of a magnetic field uniform area is reduced, the magnetic field size is reduced, and engineering applic