DocumentCode :
1068647
Title :
Spectral analysis on effects of spreads in energy and momenta in a gyrotron amplifier
Author :
Choe, Joon Y. ; Ahn, Saeyoung
Author_Institution :
Naval Research Laboratory, Washington, DC
Volume :
27
Issue :
5
fYear :
1980
fDate :
5/1/1980 12:00:00 AM
Firstpage :
962
Lastpage :
964
Abstract :
The combined effects of the spreads in energy and axial momentum of annular-beam electrons in a gyrotron amplifier are spectrally investigated. A conveniently normalized dispersion relation is found for 
modes, and analyzed to obtain the growth-rate contours. The spread effects prove to reduce the growth rate near the beam-waveguide synchronous mode, and enhance it for the mode out of synchronization. In particular, the growth rate at the synchronous mode tends to peak when the electron distribution is thermally isotropic. The results will serve as a guideline in the design of a thermal electron gun giving linear gain.
modes, and analyzed to obtain the growth-rate contours. The spread effects prove to reduce the growth rate near the beam-waveguide synchronous mode, and enhance it for the mode out of synchronization. In particular, the growth rate at the synchronous mode tends to peak when the electron distribution is thermally isotropic. The results will serve as a guideline in the design of a thermal electron gun giving linear gain.Keywords :
Cyclotrons; Dispersion; Electromagnetic waveguides; Electron beams; Equations; Gain; Gyrotrons; Magnetic field measurement; Magnetic fields; Spectral analysis;
fLanguage :
English
Journal_Title :
Electron Devices, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9383
Type :
jour
DOI :
10.1109/T-ED.1980.19964
Filename :
1480757
Link To Document :
