Prebunched high-harmonic gyrotron

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/27.55904· OSTI ID:6608478

Kou, C S; McDermott, D B; Lumann, N C ^[1]; Chu, K R ^[2]

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1. California Univ., Los Angeles, CA (USA). Dept. of Electrical Engineering
2. National Tsing Hua Univ., Hsinchu (Taiwan). Dept. of Physics

A new scheme for harmonic wave generation using a prebunched electron beam has been demonstrated. The prebunched electron beam has been used to further increase the efficiency of the authors' axis-encircling high-harmonic gyrotron. The proof-of-principle experiment was performed at the third harmonic with a TE{sub 312} mode at 27.7 GHz. The conversion power of 6.7 kW was significantly greater than that of the nonprebunched experiment. Also, mode competition was effectively suppressed. As expected, the unsaturated output power is proportional to the square of the electron beam current, and the start of oscillation current is essentially zero. A linear theory, derived by taking into account the spread of the guiding center and the spread of the axial velocity, gives good agreement with the experimental results.

• OSTI ID: 6608478
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA) Vol. 18:3; ISSN ITPSB; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
BEAM BUNCHING
BEAM CURRENTS
BEAM DYNAMICS
BEAMS
CONTROL
CURRENTS
DATA
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
FREQUENCY MIXING
HARMONIC GENERATION
INFORMATION
LEPTON BEAMS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MODE CONTROL
NUMERICAL DATA
PARTICLE BEAMS