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

Volume

31

Issue

5

fYear

1995

fDate

5/1/1995 12:00:00 AM

Firstpage

970

Lastpage

979

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.375944

Filename

375944