Stability of a high order mode CARM amplifier

Author

Lin, A.T. ; Lin, Chih-Chien ; Chu, K.R.

Author_Institution

Dept. of Phys., California Univ., Los Angeles, CA, USA

Volume

36

Issue

4

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

785

Lastpage

788

Abstract

A TE₀₁-mode CARM (cyclotron autoresonance maser) amplifier is studied with a multimode particle simulation code with emphasis on the oscillation caused by the TE₁₁ mode absolute instability. Simulation results verify the existence of the absolute instability and show that it quickly reaches a high saturation level. The dominance and persistence of the absolute instability prevent any steady-state amplification of the TE₀₁ mode. The linear and nonlinear characteristics of a TE₁₁ mode CARM amplifier are also examined. It is noted that a high-quality electron beam is essential in order to reach the interesting regime of operation

Keywords

electromagnetic oscillations; masers; microwave amplifiers; stability; CARM amplifier; TE₀₁-mode; TE₁₁ mode absolute instability; cyclotron autoresonance maser; high order mode; high-quality electron beam; linear characteristics; multimode particle simulation code; nonlinear characteristics; oscillation; saturation level; stability study; steady-state amplification; Bandwidth; Cutoff frequency; Cyclotrons; Electron beams; Magnetic fields; Negative feedback; Power amplifiers; Resonance; Stability; Tellurium;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.22488

Filename

22488