Nonlinear theory of the amplification of electromagnetic waves in an interaction of an electron beam with a plasma-filled waveguide

Journal Article · Sun May 01 04:00:00 EDT 1977 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:5332476

Loshkov, I V

The amplification of slow electromagnetic waves by an electron beam in a plasma-filled waveguide is analyzed. The electron beam is assumed to be radially bounded. The field amplitude of the amplified wave is found numerically as a function of the coordinate in the regime in which there are trapped beam particles in the homogeneous plasma-filled waveguide. In this case, the increase in the wave amplitude is limited by the capture of axial electrons into the potential well. In the nonlinear stage, the excursions of the wave amplitude are much smaller than in the case in which the beams and plasma are unbounded. Wave amplification in an inhomogeneous plasma-filled waveguide is analyzed. The inhomogeneity is specified to be such that the wave motion remains synchronized with the beam, which is retarded because of the instability. Under these conditions the maximum wave amplitude can be raised to a value substantially higher than in the case of a homogeneous plasma.

• Research Organization: Moscow Physicotechnical Institute
• OSTI ID: 5332476
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 3:3; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
AMPLIFIERS
BEAM-PLASMA SYSTEMS
BEAMS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INHOMOGENEOUS PLASMA
LEPTON BEAMS
LEPTONS
PARTICLE BEAMS
PLASMA
RADIATIONS
TRAPPED ELECTRONS
TRAPPING
WAVEGUIDES