Physics – Plasma Physics
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dppgtp217l&link_type=abstract
American Physical Society, Division of Plasma Physics Meeting, November 17-21, 1997, abstract #gTuaP217.
Physics
Plasma Physics
Scientific paper
We compare the results of detailed spectral postprocessing calculations of indirectly driven ICF implosions to experimental data. Lasnex simulates a two-dimensional capsule with surface perturbations covering a range of wavelengths. The perturbations grow during the Raleigh-Taylor unstable phases of the implosion, and different modes interact as they saturate. The Lasnex hydrodynamic simulations are postprocessed using detailed atomic kinetics models to produce simulated spectra. Argon emission line ratios are used to diagnose fuel temperature and titanium line ratios are used to diagnose the mixing of fuel and pusher material. We compare the thermo-nuclear yield and line emission as a function of surface roughness to data from experiments on the Nova laser. The drive radiation includes the time-dependent P2 and P4 asymmetries characteristic of Nova hohlraums. We also attempt to assess the sensitivity of the line ratios to some of the intrinsically 3D perturbations that are present on Nova.
Landen Otto L.
Langer Steven H.
Marinak M. M.
Scott H. A.
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