Title :
Parametric interaction of the electrons with the virtual cathode oscillations and external electromagnetic field in virtual cathode triode
Author :
Grigoryev, V.P. ; Koval, T.V.
Author_Institution :
Inst. of Nucl. Phys., Tomsk Polytech. Inst., Russia
Abstract :
In a system with a VC the oscillation of the virtual cathode results in parametric excitation of oscillations of the electrons and in phase modulation of the electron flow. In this case, the width of the electron bunch is determined by the space charge field and by the anode transparency. The coherent radiation power depends on the number of electrons in resonance with the electromagnetic wave, on the system geometry, and on the Q-factor of the resonator. The emission efficiency is higher with a feedback or an external electromagnetic wave
Keywords :
Q-factor; phase modulation; space charge; triodes; vircators; Q-factor; anode transparency; coherent radiation power; electron bunch; emission efficiency; external electromagnetic field; external electromagnetic wave; parametric interaction; phase modulation; space charge field; system geometry; virtual cathode oscillations; virtual cathode triode; Anodes; Cathodes; Electromagnetic radiation; Electromagnetic scattering; Electrons; Geometry; Phase modulation; Resonance; Space charge; Virtual colonoscopy;
Conference_Titel :
Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings
Conference_Location :
St Petersburg
Print_ISBN :
5-7422-0083-8
DOI :
10.1109/UHF.1999.787916
