%0 Journal Article %T Radial Kick in High-Efficiency Output Structures %A Huang Hua %A Levi Sch£¿chter %J - %D 2019 %R https://doi.org/10.3390/plasma2010003 %X Abstract We have developed an analytical approach that predicts radial oscillation near the aperture of a pillbox cavity. In addition, it provides natural criteria for the design of a tapered guiding magnetic field in the output section of a relativistic klystron amplifier, as well as that of a travelling wave tube, in a method that is self-consistent with the dynamics of the electrons. View Full-Tex %K microwave %K klystron %K quasi-periodic %K amplifier %U https://www.mdpi.com/2571-6182/2/1/3