Heating by Raman backscatter and forward scatter

Journal Article · Mon Oct 27 00:00:00 EST 1980 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.45.1399· OSTI ID:6739087

Estabrook, K; Kruer, W L; Lasinski, B F

This Letter presents computer simulations of the reflections and heating due to stimulated Raman scattering of intense laser light in large regions of underdense plasma. The heated electron distribution is approximately a Maxwelliam of temperature 1/2m/sub e/v/sub p/ /sup 2/. A simple model of the reflection is presented. Forward Raman scattering was also observed producing extremely energetic electrons. Finally, two-dimensional simulations showed sizable Raman scattering coexisting with heating by 2..omega../sub p/e instability. Raman scattering may cause a preheat problem with large laser-fusion-reactor targets.

• Research Organization: Lawrence Livermore Laboratory, University of California, Livermore, California 94550
• OSTI ID: 6739087
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 45:17
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA HEATING
LASER RADIATION
RAMAN EFFECT
PLASMA SIMULATION
TWO-DIMENSIONAL CALCULATIONS
ABSOLUTE INSTABILITIES
BACKSCATTERING
BEAM-PLASMA SYSTEMS
BOLTZMANN STATISTICS
CONVECTIVE INSTABILITIES
ELECTRONS
LANDAU DAMPING
LASER-PRODUCED PLASMA
SCATTERING
DAMPING
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
HEATING
INSTABILITY
LEPTONS
PLASMA
PLASMA INSTABILITY
RADIATIONS
SIMULATION
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production