Electron plasma-wave production by stimulated Raman scattering: Competition with stimulated Brillouin scattering

Journal Article · Mon Oct 08 04:00:00 EDT 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.53.1445· OSTI ID:6346618

Walsh, C J; Villeneuve, D M; Baldis, H A

We have used temporally and spectrally resolved Thomson scattering in a CO/sub 2/-laser--plasma interaction experiment to identify electron plasma waves driven by stimulated Raman scattering in a low-density preformed plasma. Plasma waves were observed in a Gaussian-shaped plasma whose peak density was in the range (0.01--0.05)n/sub c/, in qualitative agreement with threshold calculations using a convective amplification model. The plasma waves were observed only during the early part of the pump pulse, and disappeared coincidentally with the onset of ion waves driven by stimulated Brillouin scattering.

• Research Organization: Division of Physics, National Research Council, Ottawa, Ontario, Canada K1AOR6
• OSTI ID: 6346618
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:15; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
BRILLOUIN EFFECT
CAMERAS
CARBON DIOXIDE LASERS
COHERENT SCATTERING
DATA
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
ELECTRON PLASMA WAVES
EXPERIMENTAL DATA
FUNCTIONS
GAS LASERS
GAUSS FUNCTION
HEATING
INELASTIC SCATTERING
INFORMATION
ION WAVES
LASER-PRODUCED PLASMA
LASERS
MEASURING INSTRUMENTS
NUMERICAL DATA
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
PLASMA WAVES
PULSES
RADIATION DETECTORS
RADIATIONS
RAMAN EFFECT
RESOLUTION
SCATTERING
STREAK CAMERAS
THOMSON SCATTERING