Plasma heating with a rotating relativistic electron beam. II. Magnetosonic wave emission

Journal Article · Tue Mar 01 00:00:00 EST 1977 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.861889· OSTI ID:7316315

Molvig, K; Rostoker, N

The magnetosonic wave emission by an intense relativistic electron beam rotating within a plasma is calculated. This process follows the trapping of the beam in the plasma, and results in a transfer of approximately half the beam energy to the plasma ions. A nonlinear theory is given in accord with beam and plasma parameters of fusion interest. It is shown that dissipation balances the nonlinearity to produce a shock-type flow resembling that of the linear theory. The primary nonlinear modification is an adjustment of the wave speed to v/sub s/=v/sub A/M/sub s/, where v/sup 2//sub A/ =B/sup 2//sub 0//4..pi..nm/sub i/ and M/sub s/=1+B/B/sub 0/ is the mach number (B is the wave field, B/sub 0/ is the applied field). Estimates are made of power radiated to the waves and the resultant ion energies for some typical experimental parameters.

• Research Organization: Physics Department, University of California, Irvine, California 92664
• OSTI ID: 7316315
• Journal Information: Phys. Fluids; (United States), Vol. 20:3
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
MAGNETOACOUSTIC WAVES
PLASMA HEATING
ELECTRON BEAMS
MAGNETIC FIELDS
SOLITONS
WAVE PROPAGATION
BEAMS
HEATING
HYDROMAGNETIC WAVES
LEPTON BEAMS
PARTICLE BEAMS
QUASI PARTICLES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production
700108 - Fusion Energy- Plasma Research- Wave Phenomena