Transformation of High-frequency Waves and Vanishing of Low-frequency Instabilities in a Radially-inhomogeneous Beam-plasma Discharge
Kornilov E.A., Krivoruchko S.M. , Moiseev S.S.
The influence of transformation of high-frequency waves on the operating regime of a plasma-beam discharge is analyzed. Experiments show that by varying the radial distribution of the plasma density it is possible to ensure effective radiation of the oscillations near the upper hybrid resonance and by the same token prevent transfer of the energy into the low-frequency oscillations. The latter quench the low-frequency instabilities in a plasma-beam discharge.