A Feasibility Study of Using X-ray Thomson Scattering to Diagnose the Stagnated Plasma Conditions of Laser-Direct-Drive, DT Cryogenic Implosions

The design of inertial confinement fusion (ICF) ignition targets requires radiation-hydrodynamics simulations with accurate models of the fundamental material properties (i.e., equation of state, opacity, and conductivity). A feasibility study of using spatially-integrated, spectrally-resolved, X-ray Thomson scattering (XRTS) measurements to diagnose the temperature, density, and ionization of the compressed DT shell and hot spot of a laser-direct-drive implosion at stagnation was conducted. Synthetic scattering spectra were generated using 1-D implosion simulations from the LILAC code that were post processed with the X-ray Scattering (XRS) code. The optimal configuration for simultaneous collective and non-collective scattering measurements to diagnose the different regions of the stagnated plasma will be presented.

This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.