Spectra of developed Langmuir turbulence in a nonisothermal magnetized plasma

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871245· OSTI ID:165297

Vyacheslavov, L N; Burmasov, V S; Kandaurov, I V; Kruglyakov, E P; Meshkov, O I; Sanin, A L ^[1]

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1. Budker Institute of Nuclear Physics, Novosibirsk, 630090 (Russian Federation)

Strong Langmuir turbulence driven by a relativistic electron beam has been investigated by the laser scattering technique. The special features of the experiments are as follows: (i) in the regime under study, Langmuir turbulence is well developed, and the temporal and spatial scales of the turbulent region far exceed those of a single caviton; (ii) the dispersion of the electron plasma waves is governed by the magnetic field, although {omega}{sub pe}{much_gt}{omega}{sub Be}; and (iii) the temperature of plasma electrons is much higher than that of ions, i.e., the damping of ion-acoustic waves is small. {ital k}-Spectra of electron plasma waves are measured in a broad spectral region by means of CO{sub 2}-laser scattering. Criterion of modulational instability of observed spectra is estimated. The role of conversion and scattering of Langmuir waves by ion-acoustic waves in nonlinear energy transfer is discussed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• OSTI ID: 165297
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 2; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM INJECTION HEATING
BEAM-PLASMA SYSTEMS
ELECTRON BEAMS
ELECTRON PLASMA WAVES
ENERGY TRANSFER
ION ACOUSTIC WAVES
LASER SPECTROSCOPY
LIGHT SCATTERING
TURBULENCE