The effect of enhanced plasma waves on Thomson scattering with a high-frequency probe laser

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physics of Fluids B: Plasma Physics; (USA)

DOI:https://doi.org/10.1063/1.859046· OSTI ID:5348145

Drake, R P ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (US)

McIntosh {ital et} {ital al}. (Phys. Rev. Lett. {bold 57}, 337 (1986); Phys. Fluids {bold 29}, 3451 (1986)) have reported experiments in which electron-plasma waves, attributed to simulated Raman scattering, were detected by Thomson-scattering measurements. Based on threshold considerations and sample calculations, Simon and Short have argued (Phys. Fluids {bold 31}, 3371 (1988)) that a model of enhanced electron-plasma waves, driven by an electron beam in the plasma, might explain the data. In the present Brief Communication Thomson scattering from plasma waves driven by an electron beam is analyzed. It is shown that each extremum of the angle or frequency of the observed scattering can be independently used to infer the energy of the electron beam. For the present Thomson-scattering data, the inferred energies differ in both magnitude and time dependence, implying that the enhanced-plasma-wave model is inconsistent with the data.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5348145
• Journal Information: Physics of Fluids B: Plasma Physics; (USA), Journal Name: Physics of Fluids B: Plasma Physics; (USA) Vol. 1:11; ISSN 0899-8221; ISSN PFBPE
• 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
AUGMENTATION
BEAMS
COHERENT SCATTERING
DETECTION
ELECTRON BEAMS
ELECTRON PLASMA WAVES
ENERGY
INELASTIC SCATTERING
LASER-PRODUCED PLASMA
LASERS
LEPTON BEAMS
PARTICLE BEAMS
PLASMA
PLASMA WAVES
PROBES
RAMAN EFFECT
SCATTERING
THOMSON SCATTERING
THRESHOLD ENERGY