Title :
Dissipative instability of overlimiting electron beam
Author :
Rostomyan, Eduard V.
Author_Institution :
Theor. Dept., Nat. Acad. of Sci. of Armenia, Ashtarack, Armenia
Abstract :
Influence of dissipation on development of overlimiting electron beam instability caused by aperiodical modulation of beam density in medium with negative dielectric constant is investigated. Fully magnetized beam-plasma waveguide is considered. It is shown that growth rates of dissipative instability of overlimiting electron beam depend on parameter characterizing dissipation more critically as compared with underlimiting electron beams. The influence of dissipation on space-time evolution of overlimiting beam instability and its gradual transition to that of dissipative type with increase in level of dissipation is investigated in detail.
Keywords :
modulational instability; plasma filled waveguides; plasma-beam interactions; space charge waves; aperiodical modulation; beam density; beam-plasma interaction; dissipative instability; growth rates; magnetized beam-plasma waveguide; negative dielectric constant medium; overlimiting beam instability; overlimiting electron beam; plasma loaded waveguide; space-charge waves; space-time evolution; Dielectric constant; Electron beams; Optical modulation; Particle beams; Plasma applications; Plasma devices; Plasma stability; Plasma waves; Space charge; Vacuum systems;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2003.821355
