Measurement of the dispersion of thermal ion-acoustic fluctuations in high-temperature laser plasmas using multiple-wavelength Thomson scattering.
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.
Froula
D H
DH
L-399, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA. froula1@llnl.gov
Davis
P
P
Divol
L
L
Ross
J S
JS
Meezan
N
N
Price
D
D
Glenzer
S H
SH
Rousseaux
C
C