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Title: Heating by the Raman instability

Computer simulations are presented of the reflection and heating due to stimulated Raman backscatter of intense laser light in large regions of underdense plasma. The heated electron distribution is found to be approximately a Maxwellian of temperature (m/sub e//2)v/sub p//sup 2/, where v/sub p/ is the phase velocity of the electron plasma wave. A simple model of the reflection is presented. Raman may cause a pre-heat problem with large laser fusion reactor targets.
Authors:
;
Publication Date:
OSTI Identifier:
5314289
Report Number(s):
UCRL-84270; CONF-800550-1
TRN: 80-010262
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Anomalous absorption meeting, San Francisco, CA, USA, 28 May 1980
Research Org:
California Univ., Livermore (USA). Lawrence Livermore Lab.
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER-RADIATION HEATING; RAMAN EFFECT; BACKSCATTERING; COMPUTERIZED SIMULATION; DECAY INSTABILITY; DISTRIBUTION FUNCTIONS; ELECTRON PLASMA WAVES; LASER FUSION REACTORS; LASER RADIATION; PARAMETRIC INSTABILITIES; ELECTROMAGNETIC RADIATION; HEATING; INSTABILITY; PLASMA HEATING; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; PLASMA WAVES; RADIATIONS; SCATTERING; SIMULATION; THERMONUCLEAR REACTORS 700101* -- Fusion Energy-- Plasma Research-- Confinement, Heating, & Production; 700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology