Observations of enhanced Thomson scattering

Journal Article · Thu Dec 01 04:00:00 EST 1988 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866883· OSTI ID:6932454

Batha, S H; Bahr, R; Goldman, L M; Seka, W; Simon, A

The optical spectrum of scattered laser radiation from laser-produced plasmas has been measured between half and twice the incident laser frequency ..omega../sub 0/. Three spectral bands have been found, two of which straddle the 3..omega../sub 0//2 spectrum. The third band is located near ..omega../sub 0//2. These observations can be successfully interpreted in terms of a model in which there is enhanced Thomson scattering into the ''electron line.'' This enhancement is due to fast electrons creating a local bump-on-tail instability (Phys. Rev. Lett. 53, 1912 (1984)). An alternative interpretation in terms of the conventional stimulated Raman scattering and associated anti-Stokes radiation is inconsistent with our observations.

• Research Organization: Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299
• OSTI ID: 6932454
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 31:12; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ELECTRON TEMPERATURE
INELASTIC SCATTERING
LASER-PRODUCED PLASMA
LIGHT SCATTERING
PLASMA
PLASMA DIAGNOSTICS
RAMAN EFFECT
SCATTERING
THOMSON SCATTERING