Traveling-Wave Tubes with a Combined Gyroresonance-Gyroton Interaction between E_(11) and H_(11) Waves and Spiralized Electron Beam in a Corrugated Waveguide

摘要

A fundamentally new mechanism of interaction, a combined gyroresonance-gyrotron interaction, between an axially-spiralized electron beam and E_(11) and H_(11) modes in an irregular corrugated waveguide is studied. The efficiency of a traveling-wave tube that utilizes both the transverse (as in gyrotrons) and longitudinal (as in gyrotons) energy of electrons is estimated to be as high as 67%. It is demonstrated that a waveguide transformer that converts a combination of E_(11) and H_(11) waves into one E_(11) mode can be designed. The effect of space-charge fields in such a device is estimated.