Thomson scattering measurements of ion-acoustic fluctuations in CO/sub 2/-laser--plasma interaction
Journal Article
·
· Phys. Rev. Lett.; (United States)
Space- and time-resolved Thomson scattering has been used to characterize strong nonthermal ion-acoustic fluctuations in CO/sub 2/-laser--heated plasmas in the density range 0.3< or =n/n/sub c/< or =2.0. The relative fluctuation amplitude scales as deltan/napprox.I/sup 0.6/ with a level of deltan/napprox. =15% at a laser intensity I = 2.3 x 10/sup 14/ W/cm/sup 2/. No saturation with intensity is observed. The wave-number spectrum peaks at a constant klambda/sub D/approx. =0.12 over all densities.
- Research Organization:
- Institut Nacional de la Recherche ScientifiqueEnergie Varennes, Quebec J0L2P0, Canada
- OSTI ID:
- 6581095
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:3; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CARBON DIOXIDE LASERS
DATA
EXPERIMENTAL DATA
FLUCTUATIONS
GAS LASERS
HEATING
INELASTIC SCATTERING
INFORMATION
ION ACOUSTIC WAVES
ION WAVES
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LASERS
NUMERICAL DATA
PLASMA
PLASMA HEATING
PLASMA WAVES
POWER
RESOLUTION
SATURATION
SCATTERING
THOMSON SCATTERING
TIME RESOLUTION
TIMING PROPERTIES
TURBULENCE
VARIATIONS
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CARBON DIOXIDE LASERS
DATA
EXPERIMENTAL DATA
FLUCTUATIONS
GAS LASERS
HEATING
INELASTIC SCATTERING
INFORMATION
ION ACOUSTIC WAVES
ION WAVES
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LASERS
NUMERICAL DATA
PLASMA
PLASMA HEATING
PLASMA WAVES
POWER
RESOLUTION
SATURATION
SCATTERING
THOMSON SCATTERING
TIME RESOLUTION
TIMING PROPERTIES
TURBULENCE
VARIATIONS