Title :
Cyclotron maser oscillator experiments in a periodically loaded waveguide
Author :
Jerby, Eli ; Shahadi, Avi ; Grinberg, Vladimir ; Dikhtiar, Vladimir ; Sheinin, Marat ; Agmon, Eran ; Golombek, Harel ; Trebich, Vitaly ; Bensal, Moshe ; Bekefi, G.
Author_Institution :
Fac. of Eng., Tel Aviv Univ., Israel
fDate :
5/1/1995 12:00:00 AM
Abstract :
The periodic-waveguide cyclotron maser is a device in which orbiting, nonrelativistic electrons interact with traveling waves in a metallic, periodically loaded waveguide. In this paper, we describe a table-top oscillator experiment that operates in the microwave regime (9.4 GHz) with a low-energy (8 keV), low-current (0.2 A) electron beam pulse (1 ms pulse width). The frequency modulation (chirping) observed is used in the determination of cyclotron resonance condition for this interaction. The results show that the cyclotron interaction occurs with a backward-propagating wave in the periodically loaded waveguide. Microwave power of ⩾0.3 kW and efficiency of ⩾20% are measured by an external loading of the oscillator
Keywords :
chirp modulation; cyclotron masers; cyclotron resonance; free electron lasers; frequency modulation; microwave oscillators; waveguide lasers; 0.2 A; 0.3 kW; 1 ms; 20 percent; 8 keV; 9.4 GHz; backward-propagating wave; chirping; cyclotron maser oscillator experiments; electron beam pulse; external loading; free electron lasers; frequency modulation; low-current; low-energy; metallic periodically loaded waveguide; microwave power; microwave regime; orbiting nonrelativistic electrons; periodic-waveguide cyclotron maser; periodically loaded waveguide; table-top oscillator experiment; traveling waves; Charge carrier processes; Chirp; Cyclotrons; Electron beams; Frequency modulation; Loaded waveguides; Masers; Microwave devices; Microwave oscillators; Space vector pulse width modulation;
Journal_Title :
Quantum Electronics, IEEE Journal of
