Growth and saturation of stimulated beam modulation in a two-stream relativistic klystron amplifier

Journal Article · Mon Apr 05 04:00:00 EDT 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.108644· OSTI ID:6948268

Chen, C; Catravas, P; Bekefi, G ^[1]

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1. Plasma Fusion Center, Research Laboratory of Electronics, Department of Physics, Department of Electrical Engineering and Computer Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

A two-stream relativistic klystron amplifier (RKA) is proposed in which the amplification of stimulated beam modulation is achieved via the unstable two-stream interaction rather than the use of passive cavities. After a calculation of the limiting current, the amplification and saturation of the stimulated beam modulation are analyzed using a cold-fluid model and particle-in-cell simulation. Good agreement is found between theory and simulation in the linear regime. Fully modulated intense relativistic electron beams are obtained at saturation. In the proposed scheme, substantial beam energy difference is required to achieve large instability growth.

• OSTI ID: 6948268
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 62:14; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
BEAMS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
GROWTH
INSTABILITY
KLYSTRONS
LEPTON BEAMS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
MICROWAVE TUBES
MODULATION
PARTICLE BEAMS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA SIMULATION
PRODUCTION
RADIATIONS
RADIOWAVE RADIATION
RELATIVISTIC RANGE
SATURATION
SIMULATION
TWO-STREAM INSTABILITY