Observation of plasma waves from absolute stimulated Raman scattering
Journal Article
·
· Phys. Fluids; (United States)
Time-, frequency-, and wavenumber-resolved Thomson scattering techniques have been used to identify electron plasma waves driven at the quarter-critical surface by a CO/sub 2/ laser in a preformed plasma. The clear signature of absolute stimulated Raman scattering was observed, namely ..omega../sub p/roughly-equal..omega../sub 0//2 and k/sub p/roughly-equalk/sub 0/. In addition, some plasma waves with larger wavenumber were seen, perhaps corresponding to coupling with ion waves produced by stimulated Brillouin scattering. The level of ..omega../sub 0//2 scattered light, calculated from the observed level of plasma waves, should have been several orders of magnitude above the detection threshold, yet no such emission was seen.
- Research Organization:
- Division of Physics, National Research Council of Canada, Ottawa, Ontario K1A 0R6
- OSTI ID:
- 5901162
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 28:6; 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
ABSOLUTE INSTABILITIES
BRILLOUIN EFFECT
CARBON DIOXIDE LASERS
COHERENT SCATTERING
COUPLING
ELECTRON PLASMA WAVES
ENERGY
GAS LASERS
INELASTIC SCATTERING
INSTABILITY
ION WAVES
LASERS
LIGHT TRANSMISSION
PLASMA
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
PLASMA WAVES
RAMAN EFFECT
RESOLUTION
SCATTERING
SENSITIVITY
THOMSON SCATTERING
THRESHOLD ENERGY
TIME RESOLUTION
TIMING PROPERTIES
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
ABSOLUTE INSTABILITIES
BRILLOUIN EFFECT
CARBON DIOXIDE LASERS
COHERENT SCATTERING
COUPLING
ELECTRON PLASMA WAVES
ENERGY
GAS LASERS
INELASTIC SCATTERING
INSTABILITY
ION WAVES
LASERS
LIGHT TRANSMISSION
PLASMA
PLASMA DIAGNOSTICS
PLASMA INSTABILITY
PLASMA WAVES
RAMAN EFFECT
RESOLUTION
SCATTERING
SENSITIVITY
THOMSON SCATTERING
THRESHOLD ENERGY
TIME RESOLUTION
TIMING PROPERTIES