Growth and saturation of the two-plasmon decay instability
Journal Article
·
· Phys. Fluids; (United States)
An experimental study of the two-plasmon decay instability is reported. An intense CO/sub 2/ laser (10.6 ..mu..m) was used to generate the instability in a long scale length, preformed plasma. The principal experimental diagnostic measurement was time-resolved Thomson scattering, with resolution in either ..omega.. or k space. The results show that the instability evolves basically in agreement with linear theories, then saturates by the nonlinear process of mode coupling to short-wavelength ion fluctuations. At saturation, density fluctuations close to 20% are observed in both the electron and ion waves.
- Research Organization:
- Division of Physics, National Research Council, Ottawa, Canada K1A OR6
- OSTI ID:
- 6256860
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 26:5; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
CARBON DIOXIDE LASERS
COUPLING
DECAY INSTABILITY
FLUCTUATIONS
GAS LASERS
INELASTIC SCATTERING
INSTABILITY
INSTABILITY GROWTH RATES
ION DENSITY
ION WAVES
LASER-PRODUCED PLASMA
LASERS
NONLINEAR PROBLEMS
OSCILLATION MODES
PARAMETRIC INSTABILITIES
PLASMA
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
PLASMONS
QUASI PARTICLES
RESOLUTION
SATURATION
SCATTERING
THOMSON SCATTERING
TIME RESOLUTION
TIMING PROPERTIES
VARIATIONS
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
CARBON DIOXIDE LASERS
COUPLING
DECAY INSTABILITY
FLUCTUATIONS
GAS LASERS
INELASTIC SCATTERING
INSTABILITY
INSTABILITY GROWTH RATES
ION DENSITY
ION WAVES
LASER-PRODUCED PLASMA
LASERS
NONLINEAR PROBLEMS
OSCILLATION MODES
PARAMETRIC INSTABILITIES
PLASMA
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
PLASMONS
QUASI PARTICLES
RESOLUTION
SATURATION
SCATTERING
THOMSON SCATTERING
TIME RESOLUTION
TIMING PROPERTIES
VARIATIONS