Physics – Plasma Physics
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dppgto214m&link_type=abstract
American Physical Society, Division of Plasma Physics Meeting, November 17-21, 1997, abstract #gTuaO214.
Physics
Plasma Physics
Scientific paper
We describe ongoing experimental studies of plasma fluctuation effects on the propagation and the stimulated interactions of a probe beam in a Nova gasbag plasma. The motivation for this is to quantify the effects of turbulence on laser propagation in ICF plasmas. The experiments show effects ranging from near forward SBS to broadband spectral self-smoothing of a probe beam which propagates through the plasma. Time resolved spectral and time integrated amplitude detectors measure the characteristics of near forward scattered light from the 351 nm probe beam out to 35^circ from the forward direction. The probe beam average intensity ranges from 1× 10^15 W/cm^2 to 1× 10^16 W/cm^2. Nine of the 10 Nova beams heat a n_e/n_crit = 0.07 to 0.11 plasma to Te = 3keV. We compare the forward scattered signal to simulations of filamentation, Brillouin forward scatter, and passive scattering from plasma fluctuations.
Afeyan Bedros B.
Berger Richard L.
Glenzer Siegfried H.
Hinkel D. E.
Kirkwood R. K.
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