Title :
Parametric excitation of electromagnetic radiation by electron beam in layer plasma waveguide
Author :
Balakirev, V.A. ; Karas´, V.I. ; Kornilov, E.A. ; Fainberg, Ya B.
Author_Institution :
Inst. of Phys. & Technol., Acad. of Sci., Kharkov, Ukraine
Abstract :
In this work, the process of electromagnetic radiation (EMR) excitation by an electron beam is also investigated in the case of plasma waveguides where the plasma density varies along the system according to the periodic (harmonic) law. In the examined system, the plasma wave is synchronous with the beam. The plasma wave is parametrically coupled with the fast electromagnetic wave (EMW) propagating in the vacuum gap between the plasma boundary and the conductive jacket. The coupling is stimulated by the plasma density periodic inhomogeneity. It is demonstrated that in this system the process of the plasma wave parametric transformation into EMR stimulates increase of efficiency of the power pumpover from the electron beam
Keywords :
electromagnetic waves; electron beam effects; plasma density; plasma filled waveguides; plasma theory; vacuum insulation; conductive jacket; electromagnetic radiation parametric excitation; electron beam; fast electromagnetic wave; layer plasma waveguide; plasma boundary; plasma density periodic inhomogeneity; plasma density variation; plasma wave parametric transformation; power pumpover efficiency; vacuum gap; Electromagnetic coupling; Electromagnetic radiation; Electromagnetic waveguides; Electron beams; Frequency; Hafnium; Particle beams; Plasma density; Plasma temperature; Plasma waves;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1998. Proceedings ISDEIV. XVIIIth International Symposium on
Conference_Location :
Eindhoven
Print_ISBN :
0-7803-3953-3
DOI :
10.1109/DEIV.1998.738880
