Excitation of waves in a bounded plasma by an electron beam with transcritical initial velocity
Bakai A.S. , Krivulya S.S. , Fedorchenko V.D. , Muratov V.I.
It was observed for the first time that the system "plasma + electron beam", with velocity larger than the maximum phase velocity of the wave in the system, becomes unstable at a certain finite external-signal amplitude. The experimentally obtained amplitudes at which the instability sets in are in good agreement with the theoretical ones.