Three-wave parametric amplification in time-dependent media, with application to stimulated Brillouin scattering

Journal Article · Mon Oct 28 00:00:00 EST 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.2477· OSTI ID:5095510

Drake, R P; Williams, E A ^[1]

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1. Plasma Physics Research Institute, Lawrence Livermore National Laboratory, L-418, P. O. Box 808, Livermore, California (USA) University of California Davis, Davis, California (USA) Lawrence Livermore National Laboratory, L-418, P. O. Box 808, Livermore, California (USA)

A method is presented for evaluating the amplification of a three-wave parametric instability in a medium having a slow, locally linear variation in both time and space, and is applied to the specific case of stimulated Brillouin scattering (SBS) in a plasma undergoing an isothermal rarefaction. Time dependence can substantially alter the gain of such a parametric amplifier. For SBS in a subsonic rarefaction, inclusion of time dependence eliminates the absolute instability.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5095510
• Journal Information: Physical Review Letters; (United States), Vol. 67:18; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
PARAMETRIC INSTABILITIES
AMPLIFICATION
BRILLOUIN EFFECT
ISOTHERMAL PROCESSES
NONLINEAR PROBLEMS
SUBSONIC FLOW
THEORETICAL DATA
TIME DEPENDENCE
USES
COHERENT SCATTERING
DATA
FLUID FLOW
INFORMATION
INSTABILITY
NUMERICAL DATA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SCATTERING
700108* - Fusion Energy- Plasma Research- Wave Phenomena