TWT on goffered waveguide with double modes and double kinds operations

Research on a new combined gyroresonance-gyroton type of interaction large orbit helical electron beam with rotating E/sub 11/ and H/sub 11/ wave modes in a circular goffered waveguide is carried out. Results of the research have shown that the creation of a highly effective TWT with efficiency /spl sim/78 % is possible, produced from the cross and longitudinal energy of an electron beam. The estimation of the space charge fields influence on processes within such a device is given.