Raman scattering in inhomogeneous laser-produced plasma

Journal Article · Thu May 01 04:00:00 EDT 1986 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865636· OSTI ID:5955423

Simon, A; Seka, W; Goldman, L M; Short, R W

A model of Raman scattering in inhomogeneous laser-produced plasma is described, which invokes enhanced Thomson scattering. The enhancement is caused by pulses of hot electrons arising from laser--plasma interactions at the critical or quarter-critical surfaces. A simple model predicts the locations of two enhanced frequency bands, one between ..omega../sub 0/ and ..omega../sub 0//2, and the other between 2..omega../sub 0/ and ..omega../sub 0/. The model is shown to fit the results of eight experiments, including a new experiment using the six-beam Omega laser facility (Phys. Rev. Lett. 48, 1179 (1982); Phys. Fluids 27, 2181 (1984)), converted to 351 nm. In this latter experiment, simultaneous measurement of the upscattered and downscattered bands is carried out, and good agreement is found with the enhanced Thomson model.

• Research Organization: Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299
• OSTI ID: 5955423
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 29:5; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
AUGMENTATION
CORRELATIONS
HOT PLASMA
INELASTIC SCATTERING
INHOMOGENEOUS PLASMA
LASER-PRODUCED PLASMA
MATHEMATICAL MODELS
PLASMA
PULSES
RAMAN EFFECT
SCATTERING
THOMSON SCATTERING