Self-excitation of spurious oscillations in the drift region of gyrotron and their influence on gyrotron operation

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/27.338303· OSTI ID:6797521

Antakov, I I; Gachev, I G; Zasypkin, E V ^[1]

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1. Russian Academy of Science, Nizhny Novgorod (Russian Federation). Inst. of Applied Physics

Stable operation of gyrotron devices is often limited by spurious oscillations in the drift region where the external magnetic field is nonuniform. Analytical expressions for start-oscillation currents and frequencies of auto-oscillations in gyrotrons with weakly inhomogeneous dc magnetic fields have been published. These expressions are used to calculate the starting currents and frequencies of the spurious oscillations excited in the drift region of a TE[sub 021] mode gyrotron. The results of numerical simulations are in agreement with experimental measurements of spurious oscillations in the gyrotron. It is shown that self-excitation of these spurious oscillations leads to a sharp decrease in efficiency due to mode competition between desired and spurious modes.

• OSTI ID: 6797521
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 22:5; ISSN ITPSBD; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
AMPLIFIERS
COMPUTERIZED SIMULATION
DATA
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
MAGNETIC FIELD CONFIGURATIONS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
NUMERICAL DATA
OPERATION
OSCILLATION MODES
PERFORMANCE
SIMULATION
STABILITY
THEORETICAL DATA