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Theory of Multimode Resonant Backward-Wave Oscillator With an Inclined Electron Beam
Khutoryan, Eduard,Sattorov, Matlabjon,Lukin, Konstantin Alexandrovich,Oh-Joon Kwon,Sun-Hong Min,Bhattacharya, Ranajoy,In-Keun Baek,Seontae Kim,Minwoo Yi,Joonho So,Gun-Sik Park IEEE 2015 IEEE transactions on electron devices Vol.62 No.5
<P>A multimode theory of the resonant backward-wave oscillator (BWO) with an electron beam inclined with respect to the surface of a periodic structure-a clinotron-is presented. It is shown that mode interaction provides phase velocity variation in the interaction space. The beam-wave interaction power increases at a favorable phase velocity profile along the interaction space, which manifests as power peaks in the clinotron zone. In contrast, when it is nonfavorable, there is power drop in the bandwidth. Developed multimode theory results are in satisfactory agreement with the theory of a BWO with reflections and with particle-in-cell simulations.</P>
Automodulation Processes in Clinotrons With Low-Focusing Magnetic Field
Sattorov, Matlabjon,Khutoryan, Eduard,Lukin, Konstantin,Ohjoon Kwon,Sun-Hong Min,Bhattacharya, Ranajoy,In-Keun Baek,Seontae Kim,Minwoo Yi,Joonho So,Gun-Sik Park Institute of Electrical and Electronics Engineers 2015 IEEE transactions on electron devices Vol.62 No.5
<P>The automodulation processes in backward-wave oscillator with an inclined electron beam (the clinotron) operating at low-focusing magnetic fields have been studied. The automodulation behavior has been analyzed in the clinotron for different angles of the beam inclination. It has been shown that at low magnetic fields, the RF transverse electric field may cause significant changes in electron trajectories, and hence in the beam-wave interaction power that leads to the automodulation.</P>