Double beam cyclotron maser

Details Double beam cyclotron maser Double beam cyclotron maser

1992-02-27

1994-11-08

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

330 47, 372 2, 313 62, H01S 330, H01J 2308

Patent

active

053630548

ABSTRACT:
A double beam cyclotron maser comprising two electron guns for introducing two electron beams traveling parallel to each other at different speeds into an electron drift tube/waveguide. The beams have respectively different electron cyclotron space-charge harmonics. A solenoid maintains a magnetic field parallel to the direction of propagation of the electron beams while a magnetic wiggler field initially imparts a transverse force to the electrons such that they propagate down the drift tube with a helical gyration. The magnetic fields, electron beam velocities, and beam space charge harmonics are adjustable to set the interaction frequency at which amplification of electromagnetic radiation can occur. The waveguide is a slow wave structure so configured as to slow the signal from the magnetron to match the phase velocity of the double stream cyclotron space-charge wave.

REFERENCES:
patent: 4422045 (1983-12-01), Barnett
patent: 4530096 (1985-07-01), Bekefi et al.
patent: 4533875 (1985-08-01), Lau
patent: 4679197 (1987-07-01), Hsu
Hartemann et al, Phys. Fluids, vol. 30, No. 10, pp. 3283-3288, Oct. 1987, abstract only provided herewith.
Bekefi, G.; Nucl. Instrum. Method, Phys. Res. A. Accel. Spectram. Detect. Assoc., Aug. 30, 1991, vol. A318, No. 1-3, pp. 243-246.
Bekefi et al, Jnl. Appl. Phys., vol. 53, pp. 4113-4121, Jun. 1982; abst. only herewith.

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