Stimulated Raman scattering in the presence of filamentation in underdense plasmas

Journal Article · Mon May 26 00:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.56.2256· OSTI ID:5569742

Barr, H C; Boyd, T J.M.; Coutts, G A

A model of stimulated Raman scattering from underdense plasmas in which the laser intensity profile and plasma density have been corrupted by the filamentation instability is described. The model accounts in a unified way for inhomogeneity in the density, for Landau damping, and for local enhancements in lightwave intensities. In shallow filaments the concentration of the light gives rise to modest increases in growth. On the other hand, for deeper filaments the inhomogeneity and Landau damping dominate to suppress the instability. In addition, backscatter is enhanced relative to sidescatter.

• Research Organization: University College of North Wales, University of Wales, Bangor, Wales, United Kingdom
• OSTI ID: 5569742
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 56:21; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
COHERENT SCATTERING
DATA
ELECTRIC FIELDS
INFORMATION
INSTABILITY
INSTABILITY GROWTH RATES
LASER-PRODUCED PLASMA
MATHEMATICAL MODELS
NUMERICAL DATA
PLASMA
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RAMAN EFFECT
SCATTERING
THEORETICAL DATA