New model of Raman spectra in laser-produced plasma

Journal Article · Mon Nov 12 04:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.53.1912· OSTI ID:6256198

Simon, A; Short, R W

Observations of Raman scattering in laser-produced plasma can be explained by incoherent Thomson scattering, with a greatly enhanced ''plasma line''. Reversed-slope velocity distributions in the underdense region are produced by hot-electron pulses originating near the quarter-critical surface (n/sub c//4). The model explains the two gaps in the Raman spectrum, the correlation of scattering ''onset'' with that of instability at n/sub c//4, the ''scintillation'' in frequency and time, and the weak angular variation. An ''upscattered'' frequency band is predicted and has been verified by experiment.

• Research Organization: Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623
• DOE Contract Number: AC08-80DP40124
• OSTI ID: 6256198
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:20; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
AUGMENTATION
DATA
DOPPLER BROADENING
INELASTIC SCATTERING
INFORMATION
INHOMOGENEOUS PLASMA
LASER-PRODUCED PLASMA
LINE BROADENING
MATHEMATICAL MODELS
NUMERICAL DATA
PLASMA
RAMAN EFFECT
SCATTERING
THEORETICAL DATA
THOMSON SCATTERING