Double-stream cyclotron wave amplifier

A previous analysis of double-stream interactions in the presence of a finite axial magnetic field indicated the possibility of a number of double-stream amplifiers and oscillators. In the present paper experimental confirmation is reported of the theoretically predicted interactions between (1) the "fast cyclotron wave" of the slower beam and the "slow space-charge wave" of the faster beam; and between (2) the "fast space-charge wave" of the slower beam and the "slow space-charge wave" of the faster beam.