title: Electrically Tunable Four-Mirror Gyrotron with Crossed Fields
abstract: In a four-mirror gyrotron, a wide multi-screw electron beam, being in crossed electric and longitudinal magnetic fields, drifts with a velocity v d = E 0 / B 0 in the direction of the T -wave propagation between the resonator mirrors (co-current wave) or in the opposite direction (counter-propagating wave). In this case, in accordance with the Doppler effect, the generation frequency ω is determined from the synchronism conditions as ω ≈ k ω l (1±β d ), β d = v d / с . Thus, a change in E 0 chan
journal: Doklady BGUIR