Local Measurement of Electron Density and Temperature in High Temperature Laser Plasma Using the Ion-Acoustic Dispersion

Conference · Tue Sep 20 00:00:00 EDT 2005

OSTI ID:885141

Froula, D H; Davis, P; Ross, S; Meezan, N; Divol, L; Price, D; Glenzer, S H; Rousseaux, C

The dispersion of ion-acoustic fluctuations has been measured using a novel technique that employs multiple color Thomson-scattering diagnostics to measure the frequency spectrum for two separate thermal ion-acoustic fluctuations with significantly different wave vectors. The plasma fluctuations are shown to become dispersive with increasing electron temperature. We demonstrate that this technique allows a time resolved local measurement of electron density and temperature in inertial confinement fusion plasmas.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 885141
• Report Number(s): UCRL-PROC-215792; TRN: US0603786
• Resource Relation: Conference: Presented at: 12th International Symposium on Laser-Aided Plasma Diagnostics, Snowbird, UT, United States, Sep 26 - Sep 29, 2005
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLOR
ELECTRON DENSITY
ELECTRON TEMPERATURE
FLUCTUATIONS
INERTIAL CONFINEMENT
LASERS
PLASMA
PLASMA DIAGNOSTICS
THOMSON SCATTERING
VECTORS