A case study of using x-ray Thomson scattering to diagnose the in-flight plasma conditions of DT cryogenic implosions
Hannah Poole, D. Cao, R. Epstein, I. Golovkin, T. Walton, S. X. Hu, Muhammad Kasim, S. M. Vinko, J. R. Rygg, V. N. Goncharov, G. Gregori, S. P. Regan
Abstract
The design of inertial confinement fusion ignition targets requires radiation-hydrodynamics simulations with accurate models of the fundamental material properties (i.e., equation of state, opacity, and conductivity). Validation of these models is required via experimentation. A feasibility study of using spatially integrated, spectrally resolved, x-ray Thomson scattering measurements to diagnose the temperature, density, and ionization of the compressed DT shell of a cryogenic DT implosion at two-thirds convergence was conducted. Synthetic scattering spectra were generated using 1D implosion simulations from the LILAC code that were post processed with the x-ray scattering model, which is incorporated within SPECT3D. Analysis of two extreme adiabat capsule conditions showed that the plasma conditions for both compressed DT shells could be resolved.